Shadow of the Manahex Tree

{t}: Add one mana of any color
If you control Sinwood Æther Tree, The
Grand Sinwood Arch, and a troll, Add four
mana of any color instead.
"Even the mana that flows through the Sinwood forest is deadly, the trees themselves talk
amongst one another, forming factions throughout the forest, leaving domains for foolish mortals to tread."