Ellemere's Blade

You draw magic from the endless war to forge together a blade of mercy and redemption. This magic sword lasts until the spell ends. It counts as a martial melee weapon with which you are proficient. It deals 4d10 radiant damage on a hit and has the heavy property. In additional, when you hit a target with an attack using this sword you can choose to half the damage you deal and gain resistance to all damage except from good-aligned creatures until the end of your next turn.

If you drop the weapon or are disarmed, it dissipates at the end of your turn and the spell ends.

At Higher Levels. When you cast this spell using a 5th- or 6th-level spell slot, the damage increases to 5d10. When you cast it using a 7th- or 8th-level spell slot, the damage increases to 6d10. When you cast it using a spell slot of 9th level, the damage increases to 7d10.