Sakura of 10,000 Blossoms

Sakura of 10,000 Blossoms enters the battlefield tapped.
{t}: Add {c} to your mana pool.
{t}, Choose a color, sacrifice Sakura of 10,000 Blossoms: Add X to your mana pool where X is the converted mana cost on each creature you control. Creature tokens count for 1 of that chosen color.