Rashan, the deceiver

Flying, deathtouch
When you cast Rashan, the deceiver you get an emblem with "you cannot gain control of Rashan by another player".
At the end of your end step target opponent gains control of Rashan, the deceiver.
When you gain control of Rashan by another player you get back stabbed sacrifice 1 creature or 1 artifact or 1 enchantement.