Clackers

Shocking Spike.  Using its front 2 legs Clackers can produce a shocking Spike that lunges out towards a creature within 5ft dealing 1d6 lightning damage.

Explosive Discharge.  As a last ditch effort to deal serious damage with no regard for itself Clackers can detonate the core it uses to power itself to deal 8d8 lightning damage to any creature within 10ft of it on a failed dex save dc18 or half as much on a successful save. This completely destroys Clackers.

Shocking Spike. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 1d6 lightning damage.

Explosive Dishcharge. Saving throw DC 18 Dex: reach 10 ft. The target must succeed on a DC 18 Dexterity saving throw or take 32 (8d8) lightning damage.