The Erdtree

{t}: {w} or {g}.
If you control six or more lands, lands you
control have "{t}Tap: Add one mana of any
color."
{w}{w}{u}{u}{b}{b}{r}{r}{g}{g},{t}, Sacrifice The
Erdtree: Search your library for any number of
Demigod cards, put them onto the battlefield,
then shuffle.