Beckett's Counterspell

You attempt to interrupt a creature in the process of casting a spell by lacing a dagger with a small dose of paralyzing magic and hurling it at your opponent.

The target must make a Constitution saving throw. On a failed save, the opponent's 2nd level or lower spell is interrupted, and the target is momentarily stunned, losing the ability to take any further actions or bonus actions. If the target succeeds, or if the spell is of a level higher than 2nd, the spell is not interrupted, but the target remains stunned for the rest of their turn.

One dagger is consumed every time this spell is activated.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you may interrupt spells of the same level as the spell slot used.