Ill'nyen Star-Breaker

Ardent (This spell's generic mana cost must be paid
with mana of different colors.)
When Ill'nyen Star-Breaker enters the battlefield, destroy up to X target permanents. For each permanent destroyed this way, its controller
creates a Prismatic Geyser token. (They're artifacts
with "{t}: Add two mana of different colors.")
When Ill'nyen Star-Breaker leaves the battlefield,
exile all Prismatic Geyser tokens.