Swarm of quippers
Medium tiny beast, Any
Armor Class 13
Hit Points 28
Speed Swim: 40 ft
Skills Blood Frenzy. The swarm has advantage on melee attack rolls against any creature that doesn't have all its hit points.
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny quipper. The swarm can't regain hit points or gain temporary hit points.
Water Breathing. The swarm can breathe only underwater.
Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses darkvision 60ft, passive perception 8
Challenge Rating 1
Actions
Bites. Melee Weapon Attack: +5 to hit, reach 0 ft., one creature in the swarm's space. Hit: 14 (4d6) piercing damage, or 7 (2d6) piercing damage if the swarm has half of its hit points or fewer.