Chasm Spider
A chasm spider holds the vertical fissure at the back of a cave system, head down, legs braced against both faces, and waits for weight on the chamber floor below. The forelimbs are barbed for holding, and it uses them to drag its catch back down the crack, where the drop does the rest. Survey teams find only the victims' gear at the bottom.
- Physiology
- Monster
- Size
- Large
- Speed
- 40 ft., climb 50 ft.
- Armor class
- 17
- Hit points
- 171 (18d10 + 72)
- Proficiency
- +4
- STR 20 +5 save +5
- DEX 17 +3 save +7
- CON 18 +4 save +8
- INT 9 -1 save -1
- WIS 15 +2 save +2
- CHA 8 -1 save -1
- Skills
- Athletics +9 , Perception +6 , Stealth +7
- Passive Perception
- 16
- Senses
- darkvision 120 ft., tremorsense 90 ft.
- Languages
- Netherspeech; understands Netherspeech
- Damage resistances
- acid, poison
- Found in
- Subterranean
Traits
-
Crack Brace
The spider cannot be pushed, pulled or knocked Prone while it has a wall on two sides, and attacks against it from below have disadvantage.
-
Floor Sense
The spider knows the position of anything standing on rock within 90 feet.
Actions
-
Multiattack
Makes two barbed limb attacks and one bite attack.
-
Barbed Limb
+9 to hit · reach 15 ft.
2d10 + 5 piercing damage
The target is Grappled (escape DC 17) and Restrained.
-
Bite
+9 to hit · reach 5 ft.
2d8 + 5 piercing damage
The target makes a DC 17 Constitution save, taking 5d6 poison damage on a failure or half as much on a success.
-
Drag Down
The spider moves up to its climb speed carrying one Grappled creature. If it reaches the fissure, the creature takes 6d6 bludgeoning damage from the fall and is out of the fight.