Cobalion is an awesome pokemon. It has a great speed stat outrunning garchomp and others. It may lack a huge movepool but it has enough moves for a few good sets.
Ability: justified- an ability that just barely passes as good but when you switch from a psychic or ghost chances are you dont need swords dance.
Item: Focus sash
EVs: 252 hp / 252 sp.def / 4 def
Description: Thunder wave can cripple bulky waters while close combat helps take out tanks and is a generally good move. Iron head is mostly filler but has stab and can flinch. Metal burst is used in conjunction with focus sash to take out scarf-chomp or other sweepers such as Latios. The ev spread ensures survivability and makes Cobalion slow enough to Metal burst more pokemon. It is best used with full hp so switching is not recommended for the justified boost.
Double and triple battle options
Weavile. Beat up Cobalion and its a free belly drum with much less hp taken.
Black FC: 4813 8077 9726
Currently looking for cutsap or salac/lechei berries