Coffe's Counterspell

You attempt to interrupt a creature in the process of casting a spell. You and the creature make a contested Spellcasting Ability Check. If you succeed, the spell is countered and 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. 

Using a Higher-Level Spell Slot. You gain a +1 to the roll for each spell slot level above 3.