Lord Tachanka, Grim Lord

Deathless (If Lord Tachanka, Grim Lord
would die, you may exile it instead. If you do, return it to the battlefield at the beginning of the
next end step.)

When Lord Tachanka, Grim Lord enters
the battlefield, you may return another
target creature to its owner's hand.
Trying to defeat him would be a death wish. It's best to run away.