Telok, Betrayer of Innocence

Consume - When you cast this spell, gain control
of up to X target creatures, where X is the
number of tapped lands you control.
Flying, trample, indestructible
Creatures you control but don't own get -3/-3
{7}, Sacrifice a creature: Exile Telok, Betrayer of Innocence. Then return it to the battlefield
under its owners control.