Taltonite Golem

Trample, Chronic (This creature is only the colors of the mana used to cast it.)
As long as Taltonite Golem is Black, and you control a land that could produce Black mana in your graveyard, it has +2/+1. The same goes for White, Red, Green and Blue.
{2}, Sacrifice 2 lands: Return Taltonite Golem from your graveyard to your hand.