Lazav, the Ass Blinker

Whenever a creature card is put into a graveyard from anywhere, you may pay {2}.
If you do, exile Lazav, the Ass Blinker, then return it to the battlefield as a copy of target creature in any graveyard, except its name is Lazav, the Ass Blinker, it's legendary in addition to its other types, and it has this ability.