Hecate, Mother of Witches

Coven (This creature gets +1/+1 and has hexproof as
long as you control two or more other creatures that
share a creature type with it.)
Whenever you cast an instant or sorcery spell,
you draw a card, and target opponent loses life
equal to the number of warlocks you control.
{u}{b}, {t}, pay 2 life: return target creature
from your graveyard to the battlefield.