Myconid Colony Swarm
Large shadow beast (plant, swarm)
Level 5 Artillery XP 200

Initiative +6        Senses Perception +4; tremorsense 10
Swarm Attack (Poison) aura 1; each enemy that starts its turn within the aura takes 3 poison damage.
HP 51; Bloodied 25 ; see also rotting decay
AC 17; Fortitude 16, Reflex 18, Will 16
Resist half damage from melee and ranged attacks; Vulnerable 10 against close and area attacks
Speed 4

(⚔) Swarm of Slams (standard, at-will)

+12 vs AC; 1d6+5 damage.

➶ Devouring Spores (standard, at-will) ✦ Poison

Ranged 10/20; +10 vs Fortitude; 1d10+5 poison damage, and each nonfey or nonshadow creature adjacent to the target takes 5 poison damage.

ᗕ Rotting Decay ( when the colony swarm drops to 0 hit points, ) ✦ Necrotic, Zone

Close burst 2; the burst creates a zone of putrid black slime that lasts until the end of the encounter. The zone is difficult terrain. Any nonfey or nonshadow creature that starts its turn within the zone takes 5 necrotic damage

Alignment Unaligned        Languages -
Str 10 (+2)      Dex 18 (+6)      Wis 15 (+4)
Con 15 (+4)      Int 2 (-2)      Cha 10 (+2)

Description: These swarms of carnivorous fungal creatures rise up to defend a myconid colony.

Published in Underdark, page(s) 54, 151.