Grenade, Stun

Each creature within 10 feet of the grenade when it explodes makes a Constitution saving throw. On a failed save, the target takes 1d6 thunder damage and is rattled until the end of its next turn. A creature that fails the saving throw by 5 or more is stunned instead of rattled until the end of its next turn. On a success, the target takes half as much damage and isn’t rattled.