The Impossible One

Flying, Trample, Hexproof
When you cast The Impossible One, gain control
of target opponent during that player's next turn.
They discard their hand then exile their graveyard
at the end of that turn
{b}{b}: Gain control of target creature.
"He beckoned so sweetly. I had not believed such a
paradox to be possible. Were it not for the others, I
would have undoubtedly fell under his power."
-Gillian, Sern's Sorrow