Whir of Creativity

Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle your library.

"Don't forget to stop by the festival this afternoon! It'll be one to die for!" — Aiven, Advertisement Adversary