One of my friends said i was unable to do this but i think that i can.
I was playing a fast red deck and he had a mono white control. Things didn't go my way at first and he played a sun titan around turn 6-7. I had a jinxed idol out, so i stole his creature with a mark of mutiny, attacked him with it, and at my end step, i sacrificed his sun titan to give him the jinxed idol since it was a creature i controlled. Is this a legal move?
816