3-level Enchantment
You attempt to force a creature in the process of casting a spell to over-reach themselves. If the creature is casting a cantrip, this spell has no effect. If it is casting a spell of 1st level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level. On a success, the creature casts the spell and expends one of their highest, available spell slots. The spell functions as it would if cast using a higher spell slot.