"Liberated" Cardassian

Cardassian creatures your opponents control get -1/-0.
If you have Dominance(if a permanent controlled by an opponent left the battlefield this turn, you have Dominance), "Liberated" Cardassian gains deathtouch until end of turn.
Assimilation(whenever a creature dealt damage by this creature this turn dies, create a 1/1 black Borg Drone creature token with assimilation.)