Hellscape

{t}: add {u}{u}{b}{b}{r}{r} to your mana pool
{t}, exile a creature you control: add {w}{u}{b}{b}{r}{g}{g} to your mana pool
{t}, {4}{w}{u}{b}{r}{g}: Transform Hellscape into a 6/4 creature named Lucifer, the Demon King with devoid, Hexproof, and Trample