Rainbow Cataracts

Indestructible.
{t}: Add {c}{c} to your mana pool
{w}{u}{b}{r}{g}{t}: Add {w}{w}{u}{u}{b}{b}{r}{r}{g}{g}
to your mana pool.
The land changed much before the third cataract was
found. A wondrous fountain head of mana. Which
powered wards so strong surmounting them prooved
impossible.