varanus prasinus

Devoid (This card has no color.)

When you cast this spell, for each opponent, gain
control of up to one target creature that player
controls until end of turn. Untap those creatures.
They gain trample, haste, and annihilator 1 until
end of turn.

Trample, haste, annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)