The Erdrree enters the battlefield tapped.

{T}: Add {G}.

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 World Tree: Search your library for any number of Legendary Creature cards, put them onto the battlefield, then shuffle.

"Ohh, Erdtree, great Erdtree. The Golden Order itself, unwavering, stretched to the sky"

—Stranded Soul