Gutmorn, Pactbound Servant

Flying, deathtouch When Gutmorn, Pactbound Servant enters the battlefield, each player discards a nonland card. Whenever a player discards a card during your turn, they choose another player. That player conjures a duplicate of that card into their hand. It perpetually gains "You may spend mana as though it were mana

of any color to cast this spell."

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms661x8f02gqpq01yasjk25n.