Swarm of Poisonous Frogs

Medium swarm of Tiny beasts, unaligned

Armor Class 13
Hit Points 76 (17d8 – 8)
Speed 20 ft., swim 20 ft.

1 (-5) 13 (+1) 8 (-1) 1 (-5) 8 (-1) 3 (-4)

Skills Perception +1, Stealth +3
Damage Immunities poison
Condition Immunities poisoned
Senses passive Perception 11
Challenge 1 (200 XP)

Special Traits

  • Amphibious. The swarm can breathe air and water.
  • Keen Smell. The swarm has advantage on Wisdom (Perception) checks that rely on smell.
  • Standing Leap. The swarm’s long jump is up to 10 feet and its high jump is up to 5 feet, with or without 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 poisonous frog. The swarm can’t regain hit points or gain temporary hit points.


  • Bite. Melee Weapon Attack: +3 to hit, reach 0 ft., one target. Hit: 11 (3d6 + 1) piercing damage, and the target must succeed on a DC 12 Constitution saving throw or be poisoned for 1 hour.


Each frog in the hopping army bears black stripes on its hind legs and sickly, yellowish eyes. Poisonous frog swarms are composed of small, fierce, poisonous frogs. The swarm moves collectively, hopping or jumping toward their prey. Single poisonous frogs mate during the second half of the year. The male attracts a female through a series of unique mating calls consisting of strange guttural sounds. When a female answers the call, she lays a clutch of 1d6 eggs in a damp, dark area covered with leaves. The male fertilizes the eggs and protects them during their incubation period. Two weeks later the eggs hatch and the male carries the tadpoles to the water on its back. Tadpoles reach maturity in two to three months.

A single poisonous frog is a small dark-green frog with black bands or stripes on its hind legs. These stripes function as a warning to predators that the frog is poisonous. The skin of a poisonous frog is very smooth to the touch. The middle digit on each of its extremities is slightly shorter than the others.

Poisonous frog swarms attack by engulfing their prey and subjecting it to the frog’s deadly poison. Creatures that begin their turn in a poisonous frog’s space suffer swarm and poison damage.

Section 15: Copyright Notice

Tome of Horrors © 2018, Frog God Games, LLC; Authors: Kevin Baase, Erica Balsley, John “Pexx” Barnhouse, Christopher Bishop, Casey Christofferson, Jim Collura, Andrea Costantini, Jayson ‘Rocky’ Gardner, Zach Glazar, Meghan Greene, Scott Greene, Lance Hawvermale, Travis Hawvermale, Ian S. Johnston, Bill Kenower, Patrick Lawinger, Rhiannon Louve, Ian McGarty, Edwin Nagy, James Patterson, Nathan Paul, Patrick N. Pilgrim, Clark Peterson, Anthony Pryor, Greg Ragland, Robert Schwalb, G. Scott Swift, Greg A. Vaughan, and Bill Webb