Ophinix

Conductive Fur. While the ophinix is charged with electricity, a creature that touches the ophinix or hits it with a melee attack while within 5 feet of it takes 2 (1d4) lightning damage.

Lightning Recharge. Whenever the ophinix is subjected to lightning damage, it takes no damage and becomes charged with electricity. If it is already charged, the duration resets to 1 minute.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) piercing damage.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage. If the ophinix is charged with electricity, the target also takes 5 (2d4) lightning damage.

Generate Static. The ophinix rubs along a dry surface and charges its fur with static electricity. Its fur remains charged with electricity for 1 minute or until it uses Lightning Strike.

Lightning Strike (Recharge Special). The ophinix releases its static electricity at up to three targets it can see within 30 feet of it. Each creature must make a DC 12 Dexterity saving throw, taking 5 (2d4) lightning damage on a failed save, or half as much damage on a successful one. After using Lightning Strike, the ophinix is no longer charged with electricity. It can't use Lightning Strike if isn't charged with electricity.