Nissa, Blighted Sovereign

Deathtouch, trample
{x}, {t}: You gain X life.
{u}{b}{g}, {t}: Create a 2/2 black Ooze creature token with deathtouch, then Dominate. (Choose a creature you control and a creature an opponent controls. Each deals damage equal to its toughness to each other. If a nontoken creature were to die this way, create a token copy of it.)