Molten Atoll

When Molten Atoll enters the battlefield, sacrifice it unless you sacrifice an Island
or a Mountain.
{t}: Add {u}{r} to your mana pool.
{u/r}{u/r}, {t}: Tap target nonblue, nonred creature.
"The reef may be ridden with molten rock, but damn
is it beautiful." - Darium, Hydromancer