Divine Crush

The Flail, Mace, Light Hammer, or Warhammer you are holding is imbued with divine power. For the duration, you can use your spellcasting ability for the attack and damage rolls of the weapon attack, and the weapon’s damage die becomes a d8. The spell ends early if you cast it again or if you let go of the weapon.

Cantrip Upgrade. The damage die changes when you reach levels 5 (d10), 11 (d12), and 17 (3d4).