Vern, Graveshifter

+1: Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
0: Exile a creature card from your graveyard, then create a 3/3 Shapeshifter creature token with changeling (This creature is every creature type).
-3: Choose up to one target creature card in a graveyard. Create a token that’s a copy of that creature.