J'onn J'onzz, Psychic Shifter

Hexproof
Whenever a creature card is put into an opponent's graveyard from anywhere, you may have J'onn J'onzz become a copy of that card, except its name is J'onn J'onzz, Psychic Shifter, it's legendary in addition to its other types, and it has hexproof and this ability.