Taken By Darkness

Target opponent chooses three permanents
and exiles the rest. If any black cards are now
in exile, you gain control of them. If target
opponent has an ability or card in play saying
it can not be exiled, gain control of it. If you
control more permanents than any opponent, you
may cast this card as though it was an instant.
Doom comes in many forms. Darkness is but one.