Robot Santa

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."
(It attacks each combat if able and attacks
a player other than you if able.)
Whenever a creature you own but don't control attacks, you draw a card.