Arcanist's Blade

The weapon you are holding is imbued with arcane power that guides your strikes. For the duration, you can use your spellcasting modifier instead of STR or DEX for the attack and damage rolls of melee attacks using that weapon, as long as the weapon doesn't have the two handed or heavy properties. 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.

credit to: u/Xyrlian