Sugref Master of Wishes

Hexproof
Whenever a creature you control dies, create a Treasure token.
{3}{w/b} Search an opponent's library for a card.
Flip a coin. If you win, exile chosen card facedown.
If you lose put that card on top of its owner's
library. You may tap mana for any color to cast
spells exiled by Sugref Master of Wishes.