Tromspider

The Tromspider (Trom, lyrian word for poison) is one of the oldest inhabitants of Tal'Lyra. Originally the nine legged creature lived in the caves of the Endless Mountains, but the dwarves drove most of them out of their habitat, killing many in the process. Now they settled the rest of the continent, hiding their younglings in caves or deep in the forests. Their webs often span entire forests, offering everything as food that gets stuck. Most of the time, one adult spider raises many small once at once, some reports even talk about a ratio of 200 children to one grown-up specimen.

Armor Class: 10
Hitpoints: 33
Blood: 15
STR: 16 DEX: 16 CON: 16 INT: 4 WIS: 6 CHA: 1
Skills: Perception +5
Senses: Passive Perception 13
Webs: The spider builds large webs, catching the prey in it unless it wins a Dex saving throw DC13. 1 round to cut yourself free
Bite: The spider bites, dealing 1d6 piercing damage. The target must succeed a DC11 Con saving throw or get 2d6 poison damage
Swarm of Spiders: In a time of need, after reaching 10HP or less, the mother spider calls her children to attack her opponent. 4d6 spiders attack and deal 4d6-AC. DC13 Strength saving throw to not be knocked prone
Loot: 3 vials of Poison of the Tromspider