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Swarms 5e monster type

Swarms are masses of Tiny creatures acting as one: bats, rats, insects, snakes. They resist weapon damage and are best answered with area spells.

11 swarms in the SRD, from CR 1/4 to CR 3; 0 have legendary actions. Average AC 12.1, average 27 hit points.

Challenge 1/4

MonsterTypeSizeACHP
Swarm of BatsSwarm of Tiny beastsMedium1222
Swarm of RatsSwarm of Tiny beastsMedium1024
Swarm of RavensSwarm of Tiny beastsMedium1224

Challenge 1/2

MonsterTypeSizeACHP
Swarm of BeetlesSwarm of Tiny beastsMedium1222
Swarm of CentipedesSwarm of Tiny beastsMedium1222
Swarm of InsectsSwarm of Tiny beastsMedium1222
Swarm of SpidersSwarm of Tiny beastsMedium1222
Swarm of WaspsSwarm of Tiny beastsMedium1222

Challenge 1

MonsterTypeSizeACHP
Swarm of QuippersSwarm of Tiny beastsMedium1328

Challenge 2

MonsterTypeSizeACHP
Swarm of Poisonous SnakesSwarm of Tiny beastsMedium1436

Challenge 3

MonsterTypeSizeACHP
Swarm of Crawling Claws 2024Swarm of tiny undeadMedium1249

Other types: Aberration · Beast · Celestial · Construct · Dragon · Elemental · Fey · Fiend · Giant · Humanoid · Monstrosity · Ooze · Plant · Undead