small Construct
Armor Class 16 (natural armor)
Hit Points 11
Speed fly +50, walk +0
Challenge 1/4
Saving Throws cha -5, con +0, dex +3, int -5, str +1, wis -3
Damage Vulnerabilities acid
Damage Resistances piercing
Damage Immunities blinded,deafened,prone,Construct Resilience
Senses keensense 60 ft. (can't sense beyond this radius)
Languages -
Antimagic Susceptibility. The sword is incapacitated while in the area of an antimagic field. If targeted by _dispel magic_, the sword must succeed on a CON save against the caster's spell save DC or fall unconscious for 1 minute.
Construct Nature. The sword doesn't require air, food, drink, or sleep.
Construct Resilience. The sword is immune to poison and psychic damage, and it is immune to exhaustion and the charmed, frightened, paralyzed, petrified, and poisoned conditions.
False Appearance. While the sword remains motionless and isn't flying, it is indistinguishable from a normal sword.
Slash. _Melee Weapon Attack:_ +3 to hit, reach 5 ft., one target. _Hit:_ 5 (1d8+1) slashing damage.
Whirling Blade (6 HP or Fewer). The flying sword makes a Slash attack against a target it can sense within 5 feet of it.
Source: Black Flag SRD · OGL/Open