Mizzix of the Izmagnus is a mythic Legendary Creature — Goblin Wizard card from Judge Gift Cards 2021 (PJ21), collector number 8. Current market price: — (foil $7.06), TCGplayer market prices via Scryfall.
Whenever you cast an instant or sorcery spell with mana value greater than the number of experience counters you have, you get an experience counter. Instant and sorcery spells you cast cost {1} less to cast for each experience counter you have.