Cask Hauler Kobold

Sunlight Sensitivity. While in sunlight, the kobold has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Pack Tactics. The kobold has advantage on an attack roll against a creature if at least one of the kobold's allies is within 5 feet of the creature and the ally isn't incapacitated.

Volatile Cask. The kobold carries a cask of flammable alcohol on its back. While it does so, the kobold can't use its hands to make attacks or use actions, and fire damage the kobold takes is also taken by the cask.
When the cask takes fire damage, roll a d10. If the result is less than the fire damage dealt, the cask eruptsin a 10-foot radius explosion. Each creature in the area must make a DC 13 Dexterity saving throw, taking 14 (4d6) fire damage on a failed save, or half as much on a successful one. Flammable objects in the area not being worn or carried ignite.

Claws. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 2) slashing damage.

Ignite Cask. The kobold ignites the cask it carries on its back, triggering its Volatile Cask trait as if it had taken 10 or more fire damage.