Haru Glory
Rave Master
Dragon/Flying
Stats
HP: 75
Attack: 70
Defense: 90
Sp. Attack: 70
Sp. Defense: 105
Speed: 80
Abilities
Natural Cure: Any status on this Pokèmon is healed upon switching. Altaria's best ability IMHO.
Cloud Nine (DW): While this Pokèmon is on the field, all weather effects are negated. Cool, but not useful as much as NC. Avoid this in any weather team.
Weaknesses: Ice (x4), Rock (x2), Dragon (x2)
Resistances: Fire, Water, Grass, Fight, Bug
Immunities: Ground
As we can see, Altaria's strong points are Defenses, making it a great staller. Also, with this Gen, he has gained a brand new move, that makes him more bulkier as it could be: Cotton Guard.
What it does? +3 Defense.
What it means? Two turns = Max Defense.
Also, has a nice Speed that lets him setup with no worries.
As for the attacking powers, has some nice moves for each side, having Dragon Claw/Rush, Earthquake, even Pursuit could be viable, that's for the Physical side; Dragon Pulse, Ice Beam and Flamethrower from the Special side.
Has a reliable recovery move in Roost, and can Haze the field to avoid sweepers doing their job, spread some status with Sing/Toxic + Roar, or even suck their health with Sing + Dream Eater.
Here are some sets!
Bulkiness inside
Altaria @ Leftovers
Calm, Natural Cure
EVs: 252 HP/4 Def/252 SpD
- Cotton Guard
- Dragon Pulse
- Toxic
- Roost
A mix of some sets I mentioned above. A Calm nature grants the max Sp. Defense, comboed with Cotton Guard = Awesomeness. Dragon Pulse is your reliable STAB attacking move, to not be blocked by Taunt. Toxic gives status, and Roost helps with stalling.
Double Setup
Altaria @ Muscle Band
Adamant, Natural Cure
EVs: 252 Atk/252 SpD/4 Spe
- Hone Claws
- Cotton Guard
- Dragon Rush
- Earthquake
As the name says, this set works on both power and bulk. Muscle Band gives a little boost without being locked in a move. Hone Claws gives +1 Attack and +1 Accuracy, boosting Dragon Rush's accuracy and Earthquake. Cotton Guard boost Defense to gargantuan levels.
Special Attacker - Mixed Bulk
Altaria @ Wise Glasses
Modest, Natural Cure
EVs: 252 SpA/252 SpD/4 Spe
- Cotton Guard
- Dragon Pulse
- Flamethrower
- Hyper Voice
Again, both power and bulk are settled here. Wise Glasses has the same use of Muscle Band. Cotton Guard boost defense, Dragon Pulse is the obligatory STAB move, Flamethrower covers Ice weakness and adds coverage, same for Hyper Voice. Sadly, this Pokèmon doesn't have any Sp. Attack setup move.
Dragon Dancer
Altaria @ Muscle Band
Adamant, Natural Cure
EVs: 252 Atk/4 Def/252 Spe
- Dragon Dance
- Dragon Claw/Outrage
- Earthquake
- Aerial Ace
Dragon Dance boosts Attack and Speed. Dragon Claw if you want to stay sure, or Outrage if you want more power, but a Confusion. EQ is always EQ, lovely. Aerial Ace as secondary STAB, unfailable, and great move overall.
Many other sets could work, with moves in the likes of Sing + Dream Eater, Haze, even a Perish Song + something with Shadow Tag/Arena Trap combo.
Post you thoughts!