Yarakoth the Final Nightmare

At the beginning of your end step, target
opponent gains control of up to one target
creature you control. Put two +1/+1 counters
on it and tap it. It's goaded for the rest of the
game and it gains "This creature can't be
sacrificed."
Whenever a creature you own but don't control attacks, you draw a card.
His coming marks the end of dreams