Giant Flea Swarm

Medium Beast, unaligned

Armor Class 14 (natural armor)

Hit Points 58 (9d8+18)

Speed walk +30, climb +20

Challenge 2

STR
13
+1
DEX
14
+2
CON
14
+2
INT
2
-4
WIS
10
+0
CHA
2
-4

Skills perception +0

Damage Resistances bludgeoning, piercing, slashing

Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned

Senses blindsight 60', passive Perception 10

Languages –

Special Abilities

Blood Sense. The giant flea can pinpoint by scent the location of creatures that have blood within 60' of it.

Keen Smell. Advantage: smell Wis (Percept) checks.

Ravenous. When a creature that doesn't have all of its hp starts its turn in the swarm's space that creature must make DC 12 Dex save or lose 5 (2d4) hp from blood loss.

Standing Leap. The swarm's long jump is up to 30' and its high jump is up to 15 feet with or with o a running start.

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 flea. The swarm can't regain hp or gain temp hp.

Actions

Bite. Melee Weapon Attack: +4 to hit, 0 ft., one creature, in the swarm's space. 14 (4d6) piercing damage or 7 (2d6) piercing damage if the swarm has half its hp or fewer.

Source: Tome of Beasts 3 · OGL/Open