Blissey

[Shiny_Milotic]

I am using a Nature that :

- Attack

I am not sure if I should :

+ Defense
+ Special Defense
+ Speed

Which one?
What should I EV train it for?

 

[Tyrannitar]

It's Defence is dead anyway so try Special D. or Speed.

 

[TogeticTheRuler]

People have to never saw a blissey/chanceys stats to use sp.atk move on it
Make it +sp.atk or+speed

 

[Aquarelle]

Blissey has pretty poor defense, so most people give it a Bold nature (+defense -attack), and 252 EVs into defense, so it has better chanses of survivng a physical attack.

 

[BasiltheDragon]

I'd say give Bold.

 

[starterlover1]

Give it bold so it can survive a physical attack, and let it have counter, toxic, double team, and softboiled on its moveset.

 

[Shiny_Milotic]

Well, its moveset is going to be competitive. And it will most likely be :

Softboiled
Thunder Wave
Seismic Toss
Aromatherapy

Ok, bold it is then.

 

[Phantom Raichu]

Bold makes sence