Admonition

You point your finger at a spellcaster and rebuke them, unraveling their spell and inflicting psychic backlash.

You attempt to interrupt a creature in the process of casting a spell. If it is casting a spell, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, the creature's spell fails and has no effect. In addition, if the spell fails the target of Admonition takes 3d6 psychic damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, increase the damage done by 1d6 for each spell slot above the 3rd.