Imoti, Celebrant of Bounty (Foil Etched) (108) (March of the Machine: Multiverse Legends)

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Spells you cast with mana value 6 or greater have cascade.