Silverquill, the Disputant (Secrets of Strixhaven #226)

Legendary Creature — Elder Dragon - {2}{W}{B}
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.)
4/4