Swarm of Quippers

Medium swarm of Tiny beasts, unaligned

Armor Class: 13
Hit Points: 28 (8d8 - 8)
Speed: 0 ft., swim 40 ft.

STR: 13 (+1)
DEX: 16 (+3)
CON: 9 (−1)
INT: 1 (−5)
WIS: 7 (−2)
CHA: 2 (−4)

Damage Resistances: bludgeoning, piercing, slashing
Condition Immunities: charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses: darkvision 60 ft., passive Perception 8
Languages: —
Challenge: 1 (200 XP)

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.

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.

Running this fight? Add the swarm of quippers to the initiative tracker: type its name and the AC, hit points and initiative bonus fill in, and the book button shows this stat block mid-fight.