The Sun Tree

The Sun Tree enters the battlefield tapped.

{t}: Add {g} or {w}

As long as you control six or more lands, lands you control have "{t}: Add one mana of any color."

{w}{w}{u}{u}{b}{b}{r}{r}{g}{g}, {t}, Sacrifice The Sun
Tree: Search your library for up to 7 creature cards,
put them onto the battlefield, then shuffle.