# Leech Swarm

*Medium* *Beast* *unaligned*

- **Armor Class:** 13
- **Hit Points:** 32 (5d8+10)
- **Speed:** walk 10 ft. swim 40 ft.
- **Challenge Rating:** 2 (450 XP)
- **Source:** Tome of Beasts 2, page 396

| STR | DEX | CON | INT | WIS | CHA |
| --- | --- | --- | --- | --- | --- |
| 5 (-3) | 16 (+3) | 15 (+2) | 2 (-4) | 13 (+1) | 4 (-3) |

- **Skills:** perception +3, stealth +5
- **Damage Resistances:** bludgeoning, piercing, and slashing
- **Condition Immunities:** charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
- **Senses:** darkvision 30 ft., passive Perception 13
- **Languages:** —

### Special Abilities

- **Blood Frenzy:** The leech swarm has advantage on melee attack rolls against any creature that doesn't have all its hp.
- **Blood Sense:** The leech swarm can pinpoint, by scent, the location of creatures that aren't undead or constructs within 30 feet of it.
- **Swarm:** The leech swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny leech. The swarm can't regain hp or gain temporary hp.

### 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 its hp or fewer. If the target is a creature other than a construct or an undead, it must succeed on a DC 13 Dexterity saving throw or lose 2 (1d4) hp at the start of each of its turns as leeches attach to it and drain its blood. Any creature can take an action to find and remove the leeches with a successful DC 13 Wisdom (Perception) check. The leeches also detach if the target takes fire damage.