Cataclysmic Failure

8-level Divination

Casting Time: 1 reaction, which you take when a creature you can see within 60 feet of you succeeds on a saving throw or uses its Legendary Resistance trait

Range/Area: 60 feet

Components: V, S

Materials: ebony scissors

Duration: Instantaneous

You conspire with the forces of destiny to create the worst case scenario for the triggering creature. You change the creature’s successful saving throw to a failure. If the effect that required the saving throw would deal damage to the creature, the creature takes double damage from the effect this turn.