Intellect Devourer

Ingest (Whenever this creature deals combat damage
to a player, that player exiles the top card of their
library.)
{u/b}{u/b}{u/b}, Exile Intellect Devourer: Take control of target creature that was dealt combat damage by Intellect Devourer but not destroyed this turn.
When that creature leaves the battlefield, return Intellect Devourer to the battlefield under its
owner's control.