Undead Fortitude. If damage reduces the Undead Kobold to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the Undead Kobold drops to 1 hit point instead.

Multiattack. The Undead Kobold makes two attacks: one with its bite and one with its claws. For each of these attacks that reduces a creature to 0 hit points, the Undead Kobold can make an additional claw attack.

Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) piercing damage.

Claw. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) slashing damage.

Trip Attack. The Undead Kobold extinctual tries to get the upper hand in the fight. As a bonus action the Undead Kobold will try to knock a target prone. The target must make an Strength DC 13 saving throw or be knocked prone.

Grapple Attack. As an reaction to a creature moving within 5ft of the Undead Kobold, it can make one grapple attack. The target must make a Athletics DC 14 check or be grappled by the Undead Kobold. The target's speed becomes 0, it becomes restrained. The target can repeat this save with a use of an action to do so.