Arc Grenade

As an Action, a character can throw a grenade at a point up to 60 feet away. With a grenade launcher, the character can propel the grenade up to 120 feet away.

Each creature within 20 feet of an exploding arc grenade must make a DC 15 Dexterity Saving-Throw, taking 5d6 Lightning-damage on a failed save, or half as much damage on a successful one.