Pack Tactics. This dragon kin 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.
Equipment
Dagger 2 gp 1d4 piercing 1 lb. Finesse, light, thrown (range 20/60) Whenever you damage someone with the dagger, you gain 1 hp back. Whenever you deal the finishing blow with the dagger, you get back full health. It'll grow stronger the more killings(8)
Make the AC 12 and add feat 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.