Ulnaar's Arsenal

You grasp a blessed golden dagger, pointing it towards the sky before whispering a prayer to Ulnaar, the Eternal Blade. The dagger shatters into 12 shards, each shard then shoots off before stopping at a random spot in the air within an 80 feet radius around you. Each shard then transforms into a large, glowing, radiant sword - each with its own unique appearance. As an action on this turn and until the duration ends, or until you lose concentration on the spell, you can make each of these blades attack a separate creature. Each blade deals 2d8 slashing damage and 2d10 radiant damage upon a successful hit.