Dmitri, Wary of Shadows

When Dmitri, Wary of Shadows enters the battlefield, you gain 2 life.
Whenever a black source would deal damage to
or target Dmitri, instead exile him, then return
him to the battlefield under your control.
{3}{w}{w}, {t}, Sacrifice Dmitri: Gain control of
target black creature.
"Don't trust the darkness."