Leech, Giant

Small beast, unaligned

Armor Class 13
Hit Points 7 (2d6)
Speed 15 ft., swim 30 ft.

6 (-2) 16 (+3) 10 (+0) 1 (-5) 10 (+0) 2 (-4)

Saving Throws Dex + 5, Con +2
Skills Stealth +5
Senses tremorsense 30 ft., passive Perception 10
Challenge 1/4 (50 XP)


  • Amphibious. The leech can breathe air and water.


  • Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage, and the leech attaches to the target. While attached, the leech doesn’t attack. Instead, at the start of each of the leech’s turns, the target loses 5 (1d4 + 3) hp due to blood loss. The leech can detach itself by spending 5 feet of its movement. It does so after it drains 15 hp of blood from the target or the target dies. A creature, including the target, can use its action to detach the leech.


Giant leeches lurk in placid ponds, babbling creeks, and mighty rivers. They slink through the dark forest waters with their distinctive vertical undulation, following any movement they sense toward fresh blood. Some varieties have adapted to life in the oceans, and a rare few dwell on land, though land-dwelling leeches prefer humid, moist climates.

Section 15: Copyright Notice

Tome of Beasts 2. © 2020 Open Design LLC; Authors Wolfgang Baur, Celeste Conowitch, Darrin Drader, James Introcaso, Philip Larwood, Jeff Lee, Kelly Pawlik, Brian Suskind, Mike Welham.

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