Gii, Vokai Prime

First strike, haste, shroud
Spirit transfer {1}{g/u} (Exile this card from your graveyard. Search your library for a creature card that shares a colour with it, reveal it, and put it into your hand. Then shuffle your library. Activate this ability only any time you could cast a sorcery.)
Gii, Vokai Prime's power and toughness is equal to the number of cards in exile plus 3.