Aspergillum

The head of a Mace, Morningstar, or Warhammer you are wielding is doused in holy water blessed by your deity. For the duration, you can use your spellcasting ability instead of Strength for the attack and damage rolls of melee attacks made using this weapon, it's damage die becomes d8 if it was not already, and the weapon now deals radiant damage instead of the normal type. The weapon also becomes magical, if it wasn't already. The spell ends if you cast it again or if you let go of the weapon