Arcane Anomaly

You create a 30-foot Emanation originating from you that distorts magical energy. For the duration, whenever a spell is cast within the Emanation, roll a d6. On a 5 or 6, the spell dissipates with no effect, and the action, Bonus Action, or Reaction used to cast it is wasted. If that spell was cast with a spell slot, the slot isn’t expended.