Magma Opus (Extended Art) [Strixhaven: School of Mages] Human Rogue "If the griffins tell of

"If the griffins tell of their gods

Set: Alpha Edition Type: Creature — Illusion Rarity: Uncommon Cost: {3}{U} Flying

The only change in the rules is that there is a building round at the end of each turn in which any player can build

Set: Alpha Edition Type: Instant Rarity: Common Cost: {R} Cast this spell only during the declare blockers step

and a few rules changes

Magma Opus (Extended Art) [Strixhaven: School of Mages] Human Rogue "If the griffins tell ofSet: Strixhaven: School of Mages Type: Instant Rarity: Mythic Cost: {6}{U}{R} Magma Opus deals 4 damage divided as you choose among any number of targets. Tap two target permanents. Create a 4 4 blue and red Elemental creature token. Draw two cards. {U R}{U R}, Discard Magma Opus: Create a Treasure token.