Zalavexus

Creature 10
uniqueAberrationChaoticEvilSwarm
Perception +19; Darkvision, Tremorsense
Skills Arcana +17, Deception +23, Diplomacy +21, Intimidation +21, Medicine +19, Nature +21, Occultism +17, Stealth +21
CHA +7
CON +5
DEX +7
INT +3
STR +3
WIS +5

AC 30 (all-around vision); Fort +17, Ref +21, Will +19
HP 148 fast healing 10
Resistances Physical 10
Weaknesses Area Damage 10, Splash Damage 10
Speed 30 feet

This worm that walks was a cultist of the Great Old One Hastur in its prior life. It continues its conspiracies and strives to further its evil plots in its new life.