The Swarm of Insects is a Medium swarm, with Armor Class 12, 22 hit points, and Challenge Rating 1/2. A roiling mass of thousands of tiny creatures that acts as a single entity to overwhelm intruders.
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 insect. The swarm can't regain hit points or gain temporary hit points. Bites: The damage of the swarm's bite is reduced to 5 (2d4) piercing damage if the swarm has half of its hit points or fewer.
Common Questions
How much HP does a Swarm of Insects have?
22 hit points.
What is a Swarm of Insects's Challenge Rating?
Challenge Rating 1/2.
What is a Swarm of Insects's Armor Class?
AC 12.
How fast can a Swarm of Insects move?
Speed 20 ft. ft., climb 20 ft. ft.
Use Swarm of Insects at your table
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Official stats from the D&D 5e (Dungeons and Dragons 5th Edition) System Reference Document (SRD), free to use under its open license.