Mizzix of the Izmagnus [The List] Clown Robot you may sacrifice a creature

you may sacrifice a creature with power 3 or greater

Set: Jumpstart 2022 Type: Instant Rarity: Uncommon Cost: {4}{U} This spell costs {2} less to cast if you control at least two creatures that share a creature type

When Spine of Ish Sah is put into a graveyard from the battlefield

Set: Streets of New Capenna Commander Type: Creature — Shade Rarity: Rare Cost: {1}{B} Kicker {2}{B}

Glory Dominus

Mizzix of the Izmagnus [The List] Clown Robot you may sacrifice a creatureSet: The List Type: Legendary Creature Goblin Wizard Rarity: Mythic Cost: {2}{U}{R} 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.