You create a crescent-shaped sword of solidified moonlight in your hand. This magic sword lasts until the spell ends, shedding dim light in a 5-foot radius. It counts as a simple melee weapon with which you are proficient. It deals 2d8 radiant damage on a hit and has the finesse, light, and thrown properties (range 20/60).   When you use the sword to attack a shapechanger, you have advantage on the attack roll. If you hit a shapechanger with your moon blade, it must succeed on a Charisma saving throw or instantly revert to its original form. An affected shapechanger can't assume a different form until it the end of their next turn.   When you use the sword to attack an undead creature, you gain a bonus to your attack and damage rolls equal to your spellcasting ability modifier (minimum of 1). If you drop the weapon or throw it, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.