Aelar's Blade Beam

You imbue one melee weapon you wield with magic, allowing you to attack with it from a distance. When you take the attack action, you can make a ranged spell attack with the weapon in place of any of your melee attacks with it. It has a range of 60 feet. On a hit, the target takes damage equal to 1d6 + your spellcasting ability modifier of the type that weapon would normally deal. Once you use this ability 3 times, the spell ends.

If you cast this spell again, the spell ends early on any weapon still affected by it.