large Undead
Armor Class 13 (barding scraps)
Hit Points 25
Speed walk +60
Challenge 1/2
Saving Throws cha -3, con +2, dex +1, int -4, str +4, wis +1
Damage Vulnerabilities bludgeoning
Damage Resistances piercing
Damage Immunities Undead Resilience
Senses darkvision 60 ft.
Languages -
False Appearance. While the war horse skeleton remains motionless and prone, it is indistinguishable from an inanimate war horse skeleton.
Undead Nature. The skeleton doesn't require air, food, drink, or sleep.
Undead Resilience. The skeleton is immune to poison damage, to exhaustion, and to the poisoned condition.
Hooves. _Melee Weapon Attack:_ +6 to hit, reach 5 ft., one target. _Hit:_ 11 (2d6+4) bludgeoning damage.
Counterattack (Recharge 6). When a creature the war horse skeleton can see hits it with a melee attack while within 5 feet of it, the skeleton can make one Hooves attack against the attacker.
Source: Black Flag SRD · OGL/Open