Dipec, Vengeful Queen

Deathtouch, Skulk, Vigilance
When Dipec, Vengeful Queen enters the
battlefield the player with the most creatures
becomes the monarch.
When Dipec, Vengeful Queen deals combat
damage to the monarch destroy all creatures that player controls. Then return target creature card
put in a graveyard this turn onto the battlefield
under your control. You lose life equal to its
mana cost.