Community POTW #114

[Serebii]

Time for the next Pokémon of the Week, and we have a great one!

It's Breloom, the Grass/Fighting-type wonder. Before Gen V, Breloom was fairly usable, but with the addition of its Hidden Ability, Technician, it suddenly became amazing

http://www.serebii.net/pokedex-bw/286.shtml

Go nuts

 

[Lucario Fan]

Ability: Effect Spore
Item: Focus Sash/Muscle Band
Moves: ThunderPunch, Sky Uppercut, Seed Bomb, Stone Edge

 

[philzone]

Ability: Effect Spore
Item: Focus Sash/Muscle Band
Moves: ThunderPunch, Sky Uppercut, Seed Bomb, Stone Edge

use toxic heal, since toxic runs like wild fire, and it is nice to have.

Well, bless bw2 for technician, since bullet seed hits very hard, and mach punch has a good coverage. it can also abuse low sweep and force palm. And of course... SPORE. the bane to nearly any pokemon. it hits 100%, and causes fear. that, plus sub-punch, can cause havoc.
toxic heal is the best for bulky looms, due to the lack of fear of other nasty statuses, like paralysis and other stuff.

 

[Sala-imence]

Item: Focus Sash
Nature: Jolly
EVs: 252 Atk / 252 Spe / 4 HP
Ability: Technician
Moveset:
- Spore
- Wake-up Slap
- Bulk Up
- Seed Bomb

Ok, SPORE! Then make yourself more bulky with bulk up, and sweep the rest.

 

[SkyDriver]

Standard Mushroom
Breloom @ Life Orb/Fighting Gem
Technician
Adamant
252 Atk/4 Def/252 Spe
-Spore
-Swords Dance/Rock Tomb/Low Sweep
-Mach Punch
-Bullet Seed

Spore, set up and sweep with hard hitting STAB moves. Rock Tomb is an option to beat incoming Flying types, though.

Pre-Technician Breloom
Breloom @ Toxic Orb
Poison Heal
Adamant
252 Hp/252 Atk/4 Def
-Spore
-Substitute/Swords Dance
-Seed Bomb
-Focus Punch/Drain Punch

Spore is just there cuz Breloom can use it. Sub or SD is whether you like setup or safety with Focus Punch going along with Sub, Drain Punch with either. Seed Bomb is for Ghosts.

 

[Sceptile Leaf Blade]

Breloom is pretty weird. Apart from its Attack stat all of its stats suck. But it gets some amazing move options and good abilities which make it fairly viable.

Breloom @ Choice Band
252 Atk / 252 Speed / 4 HP
Ability: Technician
-Spore
-Mach Punch
-Force Palm / Low Sweep
-Bullet Seed

Fairly straightforward CB set. Mach Punch is priority and gets boosted by Technician. Force Palm is STAB and can cause paralysis, as well as being boosted by Technician. Low Sweep has the same base power but always lowers speed instead of sometimes causing paralysis. Bullet Seed is Grass STAB that gets pretty powerful with Technician boosting it. When it hits 2 times it has 75 base power prior to STAB, when it hits 3 times it already has 112 base power, and when it hits 5 times it has 187 base power prior to STAB.

 

[papayaperson]

I've used Breloom as a Drainer and a Sweeper before...
Breloom @Toxic Orb
Triat: Poison Heal
Adamant Nature
~Leech Seed
~Fling
~Synthesis
~Drain Punch
EVs: 252 HP, 252 Atk, 4 Spd

Here's my sweeper (I Baton Pass it an Agility):
Breloom @Muscle Band
Trait: Effect Spore
Jolly Nature
~Spore
~Focus Punch
~Seed Bomb
~Rock Slide/Stone Edge
EVs: 4 HP, 252 Atk, 252 Spd
This set was easier to use... Anyways use Spore to induce Sleep so that you now get a turn to use Focus Punch uninterrupted. Seed Bomb is it's Grass-Type STAB move, and Rock Slide/Stone Edge covers it's Flying-Type weakness. I gave it a Muscle Band to boost it's general attack power, but if you have it already on a Mix Sweeper then just add in another item... I'm terrible with items

 

[Star Champion AJ]

Okay then, time for Breloom.

Ability Compendium:
Effect Spore: 30% chance to paralyze (9% chance), poison (10% chance), or sleep (11% chance) when struck by a contact move.
The most useless of Breloom's three abilities, but can cripple your opponent sometimes.
Poison Heal: Heals 1/8 HP per turn when poisoned.
This is one of the abilities when having a status ailment is a good thing (looking at you Gliscor).
As soon as Breloom is poisoned (Toxic Orb for best results), the mushroom Pokémon becomes immune to the others and the healing effect is the same as holding two Leftovers at once.
The first must have ability for Breloom.
Technician: Increases the Base Power of moves with 60 or less by 50%.
OMFA (Oh My Freaking Arceus)! That ability is awesome! It boosts Scizor's Bullet Punch to... oh wait, wrong Pokémon! That ability boosts Mach Punch, Low Sweep and the "piece de la resistance"... Bullet Seed which gets outrageous power.
The second must have ability for Breloom.

Pros:
Two awesome abilities.
Six resistances (Dark, Electric, Grass, Ground, Rock and Water)
Awesome Attack (130)
One of the Elite Pokémon resisting the infamous Quake Edge combo. Only four Pokémon besides Breloom have this luxury (via typing or ability) and one of them is my favourite Pokémon.
Resistant to Stealth Rock
Can use the opponent's Toxic Spikes to its own advantage (if you have Poison Heal)

Cons:
Four 2x weaknesses (Fire, Ice, Poison and Psychic)
One nasty 4x weakness to Flying-type moves
Defensively frail (60/80/60)
Not so decent Speed (70)
Poison Healer Breloom is super-weak to Venoshock

Let me inflict a status on you, oh wait, is that a Toxic Orb? FFFFFUUUUU...

@Toxic Orb
Ability: Poison Heal
EVs: 252 Atk/252 Spd/4 Def
Nature: Jolly
Focus Punch
Seed Bomb/Stone Edge/Facade
Spore
Substitute
The typical Sub-Punch set everybody loves/hates.
Apply a Substitute to block status and activating Toxic Orb, then Spore the opponent and putting it to Sleep (which is deadly in Gen V) and finally fire powerful STAB Focus Punches in your opponents' faces, unless he/she has a Ghost-type to block this combo.
For coverage, Seed Bomb gets STAB, Stone Edge covers those pesky Flying-types while Facade gets a boost due to Breloom being poisoned.
Jolly nature is a must since Breloom needs all the Speed to Spore opponents to death.

Bullet Technician Gatling Gun

@Life Orb
Ability: Technician
EVs: 252 Atk/252 Spd/4 Def
Nature: Jolly
Low Sweep
Mach Punch
Bullet Seed
Spore
For starters, Spore puts opponents to sleep, making Breloom a threat.
Low Sweep gets STAB and Technician boosts, while reducing the opponent's Speed.
Mach Punch gets priority and can finish weakened Pokémon.
But the cream of the crop is Bullet Seed, which has a power boost in Gen V (10>25) and is boosted by Technician, with a BP ranging from 112 (2 hits) to 281 (all 5 hits) with STAB and Technician boost accounted, just a note, you can break Substitutes and pesky Sturdy Pokémon with that move. Add a Life Orb to the equation and the mushroom fighter becomes a force to be reckoned.

 

[SmeargleRocks]

Don't people know that breloom doesn't have much capability to be bulky, anyway

Technician Sweep
Adamant
Focus sash / Choice Band
Technician
Evs 252 attack, 252 speed, 4 Sp.d
Spore
Mach Punch
Bullet Seed
Swords dance / Low Sweep

Only a few notes, use spore if you are using a sash, then either set up with SD or just lower your opponents speed with low sweep, don't do wake up slap as it wakes up your opponent and then you most likely can't hit them again cause they can KO you, mach punch and choice band adamant breloom can KO some stuff so that's an option I guess

 

[Monster Guy]

Breloom is too effing slow and frail to be sweeping. I've tried using the Technician set, and it always gets outsped, or dies! I much prefer Scizor for that role, because it has decent defenses. (And a sexy defensive typing to boot.)

When I use Breloom, I use the SubPunch set with Poison Heal.

Breloon @ Toxic Orb
Trait: Poison Heal
EVs: 12 HP / 252 Atk / 244 Spe
Adamant Nature
- Spore
- Substitute
- Focus Punch
- Seed Bomb

 

[Meowmeow]

Breloom is an incredible Pokemon. It's the fastest Pokemon to have access to Spore, has a very nice typing, a decent-ish movepool, and two excellent abilities. Poison Heal makes Breloom a super bulky foe and difficult to bring down. Technician powers up Force Palm, Bullet Seed, Low Sweep, and most importantly, Mach Punch. Combined with an excellent base 130 attack stat, Breloom will cause lots of damage.

This is what you see after a nuke goes off:
Nature: Adamant/Jolly
Ability: Technician
EVs: 252 attack and speed, 4 HP
@: Life Orb/Choice Band

Low Sweep
Mach Punch
Bullet Seed
Spore/Stone Edge

If you use Choice Band, make sure you use Stone Edge over Spore.

Shrooms with Swords? Scary!
Nature: Adamant/Jolly
Ability: Technician
EVs: 252 attack and speed, 4 HP
@: Life Orb/Lum Berry

Swords Dance
Mach Punch
Bullet Seed
Spore

Spore grants Breloom a free boost, maybe even two or three! After that, nothing but Shedinja will be able to survive facing Breloom.

Now, for something very different.
Nature: Impish
Ability: Poison Heal
EVs: 252 defense, 236 HP, 20 speed
@: Toxic Orb

Spore
Substitute
Leech Seed
Focus Punch

Ah, classics. So old, yet so deadly. Well, compared to Technician sets, this set is pretty tame, until the Focus Punch flies.

The original form of power.
Nature: Adamant
Ability: Poison Heal
EVs: 252 attack, 12 HP, 244 speed
@: Toxic Orb

Spore
Substitute
Focus Punch
Seed Bomb/Stone Edge/Facade

The original Breloom of 4th gen. Still effective one generation later.

 

[Kraleck]

If any Pokemon were more deserving of a Baton Passed Speed buff, Breloom would be it. Below-Average Base 70 Speed is a nightmare when your only Priority is ignored by Ghost Types, plus your Grass-Type STAB is likely used as a supplement to your Fighting-Type Moves. Technician-Bullet Seed is a huge asset against Substitutes and Low Sweep aids your mediocre Speed while getting the boost, but many pokemon have a way of ignoring Grass-Type offense (Sap Sipper and Wonder Guard Abilities or being a Grass, Fire, Bug, Steel, Poison, or, most especially, Flying Type) and, of course, Ghost Types ignore Fighting-Type Moves.

Poison Heal Breloom has issues thanks to 5th Gen as well. Namely, Hex and Venoshock. Let's face facts - Poison Heal only works with the Poison STATUS, NOT the Poison TYPE. Because of this, Venoshock can rip into Breloom hard. Hex, likewise, has a strong hit because of the Poison Status.

Effect Spore has always been too hit-or-miss to be relied upon at all. Ignoring its potential, however, is not advised either. The rare Effect Spore Breloom can be an unwelcome monkey wrench in your plans, but the other Abilities are far too common and usable to see Effect Spore much (if ever).

 

[rc52]

Ryan's PokAnalysis
Breloom has been a staple of the Overused tier since 4th gen. There's a few reasons for that: Spore, a great movepool, Poison Heal, and 130 base Attack. Between those, we have a great stallbreaker / sweeper / something. It got even better in 5th gen, getting the ability Technician; it makes Breloom an offensive juggernaut with boosted Mach Punches. Defensively? Well defensively, this Pokemon makes me cringe. 60 / 60 / 70 defenses totally sucks. It's even worse than Swadloon! Granted, Breloom wouldn't be used defensively, but even then 70 base Speed just adds to the problem, being only as fast as OU's Steel-types. However, it would be stupid to immediately write Breloom off because of that, because with abilities and movepool like those, its Attack is really all it needs.

Abilities
Effect Spore: It's okay, but it's wasted on Breloom because it has the potential to get in the way of Spore. It's also bad compared to its other two Abilities.
Poison Heal: a great Ability on Breloom, giving it some chance of surviving a hit. Steady HP recovery with it and Drain Punch is also noteworthy.
Technician: yet another great Ability. With this, Breloom can absolutely destroy things with boosted Mach Punches, Bullet Seeds, etc. The downside unlike the other two is that it does nothing to help Breloom's atrocious defenses.

Moveset time. Let's do one that hasn't been done yet, like I always do
Breloom = Fun Guy
- Spore
- Low Sweep / Force Palm
- Bullet Seed
- Stone Edge
Item Attached: Choice Scarf
Ability: Technician
EVs and Nature:
4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)

Breloom actually makes good use of Choice Scarf, being able to surprise many of its usual counters with the game's fastest Spore (because nobody's using Scarf Smeargle anytime soon). It can pop a Spore on something like Tornadus before it even attacks, taking away a big issue before the damage can be done. Also notable is the fact that Breloom has a secondary Fighting typing, this giving it a resistance to Stealth Rock and Pursuit, which will allow it to switch in and out almost to its heart's content. Choose between Low Sweep and Force Palm based largely on a matter of taste, in my opinion. Mach Punch just isn't as useful, so it isn't necessary here. Bullet Seed still hits very hard. Stone Edge is used to make short work of Flying types, who would otherwise have Breloom for a hearty meal.

Other Options for Breloom
Not too many that someone else didn't already mention. Bulk Up, Facade, Leech Seed, Snatch, Stun Spore, Superpower, Wake-Up Slap.
Bulk Up helps out Breloom's lacking Defense while still boosting Attack. It works well with Superpower.
Facade combined with Poison Heal hurts like hell. It's a move to consider on a more offensively inclined set.
Leech Seed is a move to consider as Breloom will take any HP it can get.
Snatch is a long-lost friend from the days of RSE that stops Breloom from being total setup bait once another Pokemon is asleep and Sleep Clause kicks in.
Stun Spore isn't really necessary, as Breloom should be attacking, and Amoonguss can use double spore way better anyway.
Superpower is Breloom's strongest attack, and can be used with Bulk Up so the stat drops are counteracted.
Wake-Up Slap is kind of a gimmick but against an awake opponent it gets the Technician boost, so it's not totally useless.

Partners
Heatran is probably the best one, with it and Breloom resisting each other's weaknesses (except Heatran's fighting weakness), Heatran being able to set up Stealth Rock to make Breloom's life easier. Any Steel goes, really, now that I think about it, for the reasons mentioned, but just watch out for Fire attacks. Jolteon also gets a mention as it resists Flying and can Baton Pass speed through Agility. Pure Fire-types pair well with it as well. Things like Arcanine, Darmanitan, that sort of crowd.

Countering Breloom
It's easier than it really should be to counter Breloom. Hell, if you really wanted to, even Delibird could potentially counter Breloom if it doesn't have Mach Punch, seeing as it has two Abilities that stop Spore...okay, I'll get real. The biggie is Celebi; resisting Breloom's STABs easily and shedding sleep through Natural Cure. Gliscor also gets a mention as it can stall the hell out of Technician sets. Burning it really hurts it. Speaking of burning, what about Chandelure? Resists both STABs, hits before Breloom can Spore back. The forgotten hero of 5th gen, Espeon, can come from out of nowhere can make Breloom Spore itself, putting it out for good with the ensuing Psychic or Psyshock. Tornadus just absolutely, utterly, mercilessly destroys Breloom without any remorse whatsoever with its STAB attacks. Same goes with Crobat. Really, it's only dangerous because it will go to town on what's already out there. And for God's sake, don't let it set up! Stopping that through either blowing it away, Taunting it to stop Spore, or absorbing status with something like Gliscor will help you in defeating Greencap Stubby.

 

[EonDragonFTW]

Aaah, Breloom. My good old buddy from RSE. The Mushroom had a good ability in Poison Heal last gen, and it only gets better with its DW ability, Technician. Plus, its great movepool, notably spore, is the bane of almost every pokemon's existence and could be the main reason sleep clause is in effect. But on to the sets.

Sgt. Loom, Toxic Grenadier
Nature: Adamant/Jolly
Item: Toxic Orb
EVs: 252 Atk, 252, Spe, 4 HP
Ability: Poison Heal
Moves:
Spore
Bulk Up/Swords Dance
Drain Punch
Seed Bomb

Breloom has a couple of moves that make it seem like a military commander, what with seed bomb being grenades. But anyway, this set is simple. Spore something, keep setting up with Bulk Up/ Swords Dance (depending on if you want to mend that Def, or go all out attacking. This set would prefer Bulk Up cuz of Poison Heal making Breloom harder to kill). Then annihilate all the things with Drain Punch, which adds in even more healing. If your enemy resists Fighting, then bombard them with the grenades that are Seed Bomb, which will hurt a lot since it's Breloom's strongest Grass STAB move coming off of a boosted base 130 stat.

Technician Bullet Death Machine/Machine gun
Ability: Technician
Item: Life Orb/Focus Sash
Nature: Adamant/Jolly
EVs: 4 HP, 252 Atk, 252 Spe
Moves:
Spore
Swords Dance
Mach Punch
Bullet Seed

Another set with a very military like move, Bullet seed. Same strategy as before, this time boosting with swords Dance as power is much more necessary as Breloom's defenses aren't good. Boost a couple of times (The Sash will let you boost at least twice, one being on the switch), and then proceed to sweep. Life Orb gives a little more Ooomph, but reduces survivability. Mach Punch surpasses that horrible speed, and Bullet Seed destroys EVERYTHING with multiple hits.

 

[Eckhartnw7]

Breloom is one of my favorite pokemon of all time, even before I learned about Spore. It has a huge Attack stat and abuses it when you use the Spore Focus Punch Combination.

Standard Breloom:
Focus Punch
Spore
Substitute
Seed Bomb
Ability: Poison Heal
Item: Toxic Orb
Adamant or Jolly nature.
252 Atk/ 4 HP/ 252 Speed

Your bread and butter Breloom. It hits hard and with the speed EVs, Breloom won't lag behind that badly.

BulkyBreloom!
Drain Punch
Substitute
Bulk Up
Seed Bomb/Bullet Seed/Spore.
Ability: Poison Heal/ Technician.
Item: Leftovers or Poison Heal depending on ability.
252 HP/ 4 Def/ 252 SpDef

Switch in on a move that Breloom resists, and then start subbing and bulking. It will take care of quite a few things. Spore can be used for More Bulks, Seed Bomb if you use Poison Heal, Bullet Seed if you use Technician.

 

[tarix3245]

Ability - Poison Heal
Item - Toxic Orb
Moves - Spore, Focus Punch, Facade, Substitute

 

[MatchMaster]

With a high attack stat, two excellent abilities, and an interestingly good defensive typing, Breloom has become a top threat in OU. Combine this with a decent movepool, and you have a monstrous physical attacker that can be a nightmare to defensively-inclined teams. Technician was what made Breloom much more popular in BW2, making Breloom's Mach Punch have the same amount of power as Scizor's Bullet Punch, except with much better coverage. Bullet Seed also gets a boast, allowing it to take on even the most fearsome Substitute users that fear being revenge killed, such as Terrakion and Keldeo. Things got even better for it when Tornadus-T was banned.

Breloom does however, have quite visible flaws. Barring Attack, its other stats are below average. While Mach Punch somewhat makes up for Breloom's base 70 speed, faster opponents that can take the hit or faster priority users will always be troublesome for it, especially considering its low 60 / 80 / 60 defenses. It also has the dreaded four-moveslot syndrome, having to choose between crippling something with Spore or taking on a wider range of threats. These flaws are overshadowed largely by its positives and the fact that they can be handled by teammates.

Life Orb
Item: Life Orb / Choice Band
Ability: Technician
Nature: Jolly / Adamant
EVs: 4 HP / 252 Atk / 252 Spe
- Bullet Seed
- Mach Punch
- Low Sweep
- Spore / Stone Edge

Even without setup, Breloom is quite capable of taking on threats. The idea is to switch into something that you scare out, such as Tyranitar, select Low Sweep, effectively crippling the switch-in. This strategy becomes even more effective due to the fact that most things scared away are weak to low sweep and are slow walls, so in case the opponent even stays in, they will be destroyed. A Jolly nature is important to this set, as it allows Breloom to outpace threats that have been hit by Low Sweep. Choice Band is another option though. If using it, Stone Edge should be used, as locking into Spore can be unappealing, especially with Breloom's low speed. Adamant can also be used to allow Low Sweep to 2HKO some threats that it couldn't otherwise when using a Choice Band.

Swords Dance
Item: Life Orb
Ability: Technician
Nature: Adamant / Jolly
EVs: 4 HP / 252 Atk / 252 Spe
- Bullet Seed
- Spore
- Mach Punch
- Swords Dance
Unparalleled power is what should come to mind when seeing this set. The only three users of Swords Dance in OU that pack more power are both formes or Landorus and Haxorus, factoring in commonly-used natures. An Adamant nature is preferred, as most things faster get destroyed by a boosted Mach Punch. Stone Edge could be used over Spore for more coverage, but Breloom will usually still lose to things that Stone Edge is meant to hit.

Checks & Counters
Breloom is fairly hard to counter before Sleep Clause is active. The best way to stop Breloom without losing a Pokemon to Spore is Celebi, who resists Breloom's STABs, can shrug off Spore with natural cure, outpaces, and can OHKO in return. However, it can be kept at bay with Spore if the opponent predicts the switch-in. Espeon can switch into Spore, even backfiring it if Breloom isn't using Poison Heal, but has a hard time taking hits due to its low defense. Xatu also has Magic Bounce, but must beware of Stone Edge. Heracross can also switch in fairly safely, as it resists its STABs, and can use sleep talk to take on Spore, OHKOing if it has Guts with Megahorn or Close Combat. Breloom variants with Substitute are shut down by Taunt users. Tornados stands out as it can Taunt a Breloom expecting Tornadus to simply break its Sub, shutting off Spore, and KO with Hurricane. Finally, Cosmic Power Sigilyph utterly shuts down Breloom lacking Stone Edge once Flame Orb activates, and can use it as setup bait. Once Sleep Clause is active, Breloom is drastically easier to handle. Even Choice Scarf sets are handled by Skarmory and faster Choice Scarf users. If all else fails, remember Breloom is fairly easy to revenge kill. Mamoswine's Ice Shard should comfortably OHKO it.

 

[alexanderdlcruz]

Breloom @ Life Orb/Expert Belt
Ability: Technician(DW)
EVs: 252 Attack/252 Speed/6 Defense
Adamant (+Atk, -SAtk)/Jolly Nature (+Spd, -SAtk)
-Swords Dance
-Seed Bomb
-ThunderPunch
-Mach Punch/Sky Uppercut

 

[LeafytheLeafeon]

For some reason, Shiny Breloom reminds me of Autumn.

Anyway, this also reminds me of my Sapphire Version, which got lost in my Grandma's apartment on her floor, and now someone else lives in the apartment. Emerald... Gave it to my friend. Ruby, my sister's friend's game. Ehh, I didn't actually had the time to play on them, especially Ruby. I got a level 100 male Azumarril on that Sapphire D:

EDIT: I'm getting Breloom before tomorrow! (hopefully)

 

[Soperman]

So Breloom is notorious for being one of the most annoying pokemon in the history of the game. Why? Because of Spore. 100% accuracy sleep move means instant time to set up due to a switch and the ability to take out counters. He also has great Attack and an awesome movepool. That being said, Grass isn't really that great of a type, and his Speed is pretty bad by OU standards.
Oh, did I mention he also has amazing abilities?

Effect Spore: There is a 30% chance that you will give the opponent some status if they hit you with a direct attack. Fun, but not as good as his other two abilities. Also, this means you may not be able to use your Spore all the time, so keep that in mind.
Poison Heal: This is also an awesome ability, better than the first even. With the Toxic Orb, after one turn you get leftovers, but now you can't be Burned or Paralyzed because you're poisoned! It's so much fun, and really good to use on a Sand team or something like that. However, most people like to use...
Techinician (DW): On Breloom especially, this is is an intense ability. All attacks with a base power lower than 60 get a 1.5 time boost. So Mach Punch becomes insanely powerful priority, Bullet Seed wipes out Subs, Sturdy, and anyone else who thinks they can deal with Breloom, and Low Sweep is a stronger alternative to Drain Punch and you get to finally outspeed your opponent. So good.

Suck it, Toxic Spikes!
-Spore
-Drain Punch
-Seed Bomb
-Mach Punch
Item: Toxic Orb
ABility: Poison Heal
EVs and Nature: Jolly (+Spd, -Atk)
4 HP/252 Atk/252 Spd
So this was the main set for Breloom before he came out in the DW. Hits hard and heals fast, it was a great set to use. Drain Punch is STAB, and it allows for Breloom to heal even more. Seed Bomb is also strong STAB. Mach Punch is for STAB priority, which is always nice. The coverage is all around pretty good on this set, and it hits hard. If you want, you can sub out Mach Punch for Bulk Up, to hit even harder and maybe tank some hits of the opponent's. Spore is Spore; you always have Spore on Breloom, no matter what.

Technically, I'm invincible.
-Spore
-Mach Punch
-Bullet Seed
-Low Sweep
Item: Life Orb
Ability: Technician
EVs and Nature: Jolly (+Spd, -Atk)
4 HP/252 Atk/252 Spd
So this is the most poplar set for Breloom out there right now. Mach Punch suddenly is a deadly move that snipes and destroys targets. Low Sweep is stronger than Drain Punch, and now allows for you to outspeed the opponent now that their Speed has been lowered. Bullet Seed after 2 hits is almost as strong as Seed Bomb; with three stronger, four almost twice as powerful as Seed Bomb, and at five is intensely strong. This is why Breloom is so deadly. He hits like a missile and leaves no survivors.

Other Options
Sky Uppercut or Superpower can be used over Drain Punch in the first set if you want the power, but Drain Punch is the best imo for the healing.
Like I mentioned earlier, Bulk Up is an option for the first set to hit harder and be bulkier. I recommend taking out some EVs from Speed and putting them into HP to tank more hits, along with changing the nature to Adamant.

Explaining the EVs and Nature
You'll notice for both sets I put max Attack and Speed EVs and Jolly. Always Jolly. This is because a) you want Breloom to hit as hard as possible and b) he needs all the Speed he can get. His items are also mandatory basically, for the healing and power respectively.

Countering Breloom
Lati twins are the biggest ones, as they resist his STAB, outspeed him and have STAB se moves to kill him. As most pokemon outspeed him, Fire types are generally a good option to beat him up with. These include, but are not limited to, Infernape and Darmanitan, both fast and hard-hitting. Gengar also works well, being able to Disable Spore and laughing off all of his other attacks. Finally, always make sure Sleep clause is on, so that Breloom can't single-handedly rip through your entire team.