Strength in Numbers. The swarm has advantage on Strength and Constitution checks and saving throws. As long as the swarm at least half of its hit points, it is immune to being grappled.
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Medium humanoid. The swarm can't regain hit points or gain temporary hit points.
Multiattack. The swarm makes two attacks, each of which can be with its scimitars or its flintlocks.
Scimitars. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 14 (4d6) slashing damage, or 7 (2d6) slashing damage if the swarm has half of its hit points or fewer.
Flintlocks. Ranged Weapon Attack: +4 to hit, range 30/90 ft., one target. Hit: 22 (4d10) piercing damage, or 11 (2d10) piercing damage if the swarm has half of its hit points or fewer.
Comments