Galaxy

Every turn choose one different effect:
{t}: add {u} to your mana pool,
{t}: add {w} to your mana pool,
{t}: add {b} to your mana pool,
{t}: add {r} to your mana pool,
{t}: add {g} to your mana pool,
At the fifth turn sacrifice this card: add three
mana in any combination of colors.