Headhunter Clique

Flying
Hexblood (When this creature dies, create an Aura
Curse enchantment token attached to target opponent.
The token has enchant player and "At the beginning
of enchanted player's upkeep, that player loses 1 life.")
When Headhunter Clique enters the battlefield,
you may destroy target creature an enchanted opponent controls. If you do, you gain 3 life.