Pyro Fiend of Thraben Past

Sin, Double strike
When Pyro fiend of thraben past dies, return it to the battlefield as a copy of target creature that shares a card type with it. (Devil, Shapeshifter or both)
Whenever a creature you or an opponent controls would die, exile it instead. Destruct (Whenever a card you control goes into exile, shuffle your entire exile other than the card that was exiled most recently into your library)