Swarm of Bubble Sea Horses

Medium swarm of Tiny Beasts, unaligned

Armor Class 11
Hit Points 21 (6d8 – 6)
Speed 0 ft., swim 20 ft.

5 (-3) 12 (+1) 8 (-1) 1 (-5) 10 (+0) 2 (-4)

Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses passive Perception 10
Challenge 1 (200 XP)
Proficiency Bonus +2


  • 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 sea horse. The swarm can’t regain hit points or gain temporary hit points.
  • Water Breathing. The swarm can breathe only underwater.


  • Bubble Burn. Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm’s space. Hit: 11 (3d6 + 1) acid damage, or 7 (2d6 + 1) acid damage if the swarm has half of its hit points or fewer.
  • Breathing Bubble. The swarm can create a sphere of water around itself. This sphere lasts for 1 hour or until the swarm dies. The swarm gains a flying speed of 30 feet, and it can hover for the duration.
  • Bubble Trap (Recharge 5-6). The swarm spits a bubble toward a Medium or smaller creature it can see within 30 feet of it. The target must succeed on a DC 11 Dexterity saving throw or be trapped inside the bubble. Nothing can pass in or out of the bubble except by teleportation. It has an AC of 8 and 8 hit points. Reducing it to 0 hit points destroys it. At the end of the trapped creature’s turn, the bubble floats 5 feet away from the swarm. The bubble dissipates after 10 minutes.


A bubble sea horse is a docile creature that spends most of its time with its herd, but it is curious about other sea life.

Occasionally, a bubble sea horse gets an exploratory urge and uses its bubble of water to float over land. Bubble sea horses are a popular pet for those who spend a great deal of time above and below the water. Although generally peaceful, a bubble sea horse quickly defends itself if threatened.

Section 15: Copyright Notice

Affinity Torus Copyright 2022 Dias Ex Machina Author Chris Dias

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