Swarm of Insects

Swarm of Insects

Medium swarm of tiny beasts · CR 1/2 · 100 XP

11 AC · 19 HP

Roll the Swarm of Insects

Bites

Press a roll button. The dice land here.

Stat block

Type
Medium swarm of tiny beasts, unaligned
Armor Class
11
Hit Points
19 (3d8 + 6)
Speed
20 ft.
Challenge
1/2 (100 XP), proficiency +2
Resistances
bludgeoning, piercing, slashing
Condition immunities
Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
Senses
blindsight 30 ft., passive perception 8
Languages
None
STRDEXCONINTWISCHA
3
13
14
1
7
1

Swarm of Insects odds against your Armor Class

Chance to hit, then average damage per attack once misses and critical hits are counted.

AttackAC 12AC 14AC 15AC 16AC 18AC 20
Bites (+3)60%
6.1 dmg		50%
5.1 dmg		45%
4.7 dmg		40%
4.2 dmg		30%
3.2 dmg		20%
2.3 dmg

Swarm of Insects hit points

The stat block uses the average, 19. Rolled, 3d8 + 6 lands anywhere from 9 to 30.

9: 0.20%10: 0.59%11: 1.17%12: 1.95%13: 2.93%14: 4.10%15: 5.47%16: 7.03%17: 8.20%18: 8.98%19: 9.38%20: 9.38%21: 8.98%22: 8.20%23: 7.03%24: 5.47%25: 4.10%26: 2.93%27: 1.95%28: 1.17%29: 0.59%30: 0.20%
9chance of each total for 3d8 + 630
Hit pointsChance
14 or more93%
20 or more50%
25 or more11%
28 or more2%

Traits

Spider Climb. If the swarm has a Climb Speed, the swarm can climb difficult surfaces, including along ceilings, without needing to make an ability check.

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.

Actions

Bites. Melee Attack Roll: +3, reach 5 ft. Hit: 6 () Poison damage, or 3 () Poison damage if the swarm is Bloodied.

Other CR 1/2 monsters

Ape Black Bear Cockatrice Crocodile Darkmantle Dust Mephit Giant Goat Giant Seahorse Giant Wasp Gnoll Warrior Gray Ooze Hobgoblin Warrior

This page includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License. The averages, odds and tables are ours.