Electric Blade

Make a melee attack with a weapon. On a hit, the target suffers the attack's normal effects and you gain a d6 discharge dice.

If you cast this spell while already having discharge dice, spend any amount of discharge dice. A creature within 10 feet of the initial target must make a Dexterity saving throw or take damage equal to the discharge dice spent.

Discharge dice gained this way last for up to 1 minute.

At 5th level, the attack grants two discharge dice and an additional one at 11th and 17th level.