Thunder Flux Grenade

Imbue an arrow, crossbow bolt, or throwable weapon with the power of concentrated thunder and lightning. After a brief period, the weapon explodes with arc energy within a 10 ft radius. Targets within that area must make a wisdom saving throw (DC 15) to take half damage.The weapon does its normal damage to the target hit plus 2d8 thunder damage within the area of effect.

At Higher Levels. At spell level 3, the radius increases to 15 ft and adds an additional 2d8 of electric damage. Additionally, if the targets fail the saving throw, they are blinded and deafened for one of their turns.