Bless Weapon

The weapon you are holding is 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 using that weapon, and the weapon's damage die becomes a d8. The weapon also becomes magical, if it isn't already. The spell ends if you cast it again or if you let go of the weapon.

You gain a +1 to hit undead.

At higher levels the damage increases level 5 1d10, level 11 1d12, level 17 2d6.