The Aetherstone Relic

You may spend mana as though it were mana of
any color and whenever a land's ability causes
you to add one or more mana, add one
additional colorless mana.
{2}, {t}: Choose new targets for target spell.
(They must still be legal targets.)
{10}, {t}: Transform Aetherstone Relic. Activate
this ability only when you control 2 or
more Aethershapers.