MagearnaSteelFairy

PvP Full It will provide strong defense and deal a lot of damage while also recovering health.

Fleur cannon can be used to deal damage+triggers eject pack to switching out
Steel beam for dealing alot of damage but with a cost of 50% of hp
Trick room used to setting up
Encore to forces pokemon uses damaging moves instead of status move like taunt,parting shot etc.