Esor, Ironteeth Terror

Menace, Ward - Sacrifice a creature.
Coven- At the beginning of combat on your turn,
if you control three or more creatures with
different powers, gain control of target creature.
This ability doesn't activate if you already control
a permanent you don't own.
When Esor, Ironteeth Terror enters the battlefield, create a 1/1 black imp creature token
with flying and deathtouch.