Traits

Swarm: Here the swarm of insects monster could occupy an another creature’s space and vice versa, of course the swarm could move via any opening large enough for a tiny insect. Even though the swarm is unable to regain Hit points, or otherwise gain Temporary hits points.

Take Action

Bites: By using this bite action this swarm of insects monster can make a Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm’s space. Hit: 10 (4d4) Piercing Damage, or 5 (2d4) Piercing Damage if the swarm is less than half its Hit Points.

Attributes for Swarm of Insects DnD5E Monster

AC 12 (Natural Armor).
Alignment Unaligned
CHA 1
CON 10
Challenge Rating 1/2
Condition Immunities Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
DEX 13
HP 22 (5d8)
INT 1
Passive Perception 8
Resistances Bludgeoning and Piercing. Slashing
Roll 0 Full 1d20 + 3-4d4
Roll 1 Half of 1d20 + 3 2d4
STR 3
Senses Blindsight 10 Ft.
Size Medium
Speed 20 ft., climb up 20 ft.
Type Small animals in a swarm
WIS 7