I run a Power H Yveltal.
Yveltal @ Power Herb
Ability: Dark Aura
Item: Power Herb
Nature: Adamant
EVs: 252 Att., 252 Speed, 4 HP
Moves:
-Sucker Punch
-Knock Off
-Foul Play
-Sky Attack
Sucker Punch for surprise kills, Foul Play for boosted foes, Knock Off for high power and item killing, and Sky...