Cosmic Smite

The next time you hit a creature with a melee weapon attack during the spell’s duration, your weapon phases through an extra-dimensional plane before hitting the target, and the attack deals an extra 1d6 Psychic damage and an additional 1d6 Necrotic damage to the target and causes the target to hallucinate. At the start of each of its turns until the spell ends, the target must make a Wisdom saving throw. On a failed save, it falls Prone. On a successful save, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, an initial extra damage of your choice dealt by the attack increases by 1d6 for each slot.