Franklin Richards, Ascendant

At the beginning of combat on your turn, if you've cast a noncreature spell this turn, discover 6. (Exile cards from the top of your library until you exile a nonland card with mana value 6 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o2yjc0x57pb1h43tbjcmq.