Silverquill, the Disputant SOS/226

Set: Secrets of Strixhaven
Collector Code: SOS/226
Name: Silverquill, the Disputant
Type: Legendary Creature — Elder Dragon
Oracle text: Flying, vigilance Each instant and sorcery spell you cast has casualty 1. (As you cast that spell, you may sacrifice a creature with power 1 or greater. When you do, copy the spell and you may choose new targets for the copy.)
Rarity: Mythic