Mox Prism

{w}{u}{b}{r}{g} Dawn-{t}: Add one mana of any color to your mana pool if you control a card with the basic land type that that could produce that color of mana. (For example, if you control a island, add {u} to your mana pool, if you control a mountain and a swamp, add {b} or {r} to your mana pool)
A shard of the agglomerated light of the Suns.