Prismatic Maelstrom

As you play Prismatic Maelstrom from your
hand, you may pay {x}. Spend only colored mana
to pay for that cost. If you do, it enters the battlefield tapped with X charge counters on it.
{1}, {t}: Put a charge counter Prismatic
Maelstrom. Spend only colored mana to activate
this ability.
{t}, Remove X charge counter from Prismatic Maelstrom: Add X mana of any color.