Sandy petersens cthulhu mythos 358

IX Mythos Bestiary
against the toxic webbing as detailed above. A round
or two after the pit opens, a large boulder drops down
from above to close the pit off, trapping the victim
inside. This six-foot-diameter boulder (hardness 8, hp
1,080) weighs ten tons, so moving it from below by
force is essentially impossible. A leng spider can use its
webs as cables to roll the boulder aside as a full-round
action; at the GM’s discretion, cunning PCs might be
able to do the same given the right resources and plan.
Boulder Pendulum (CR 12); Type mechanical; Perception
DC 28; Disable Device DC 28; Trigger location; Reset
manual; Effect This deadly trap is an example of an
exception to the leng spider’s preference for non-lethal
traps. A boulder pendulum is typically placed in an
area of narrow confines, such as along a mountain
ledge or in a narrow passage with a tall ceiling. When
triggered, a large boulder swings down on a thick
cord of webbing. It makes a +20 melee attack on
the creature that triggered the trap and against all
creatures in a 30-foot line beyond the initial target. On
a hit, the boulder inflicts 8d6 points of bludgeoning
damage. A creature damaged by this trap must make
a DC 20 Reflex save to avoid being knocked prone. If a
creature is knocked prone while on a ledge that is no
wider than the creature’s space, it has a 50% chance of
being knocked off the ledge.
Web Net (CR 3); Type mechanical; Perception DC 20;
Disable Device DC 20; Trigger location; Reset manual;
Effect When a creature enters the trapped location, the

trap triggers, causing a weighted net made of toxic
leng spider webbing to drop over a ten-foot-diameter
area below. A creature can attempt a DC 15 Reflex save
to dodge out of the net’s way—otherwise the creature
is knocked prone, entangled, and exposed to the web’s
toxins (see above).

Leng spiders are intelligent, carnivorous spiders. An
adult has a legspan of 20–30 feet or occasionally more,
but smaller (younger) specimens are common. An
adult weighs 1-3 tons. Since they never stop growing,
a few are far larger.
Leng spiders are sly and design traps for their prey.
These can be elaborate and often involve treasure as
bait. They are clever enough to let some adventurers
live after finding the treasure, to entice further visitors
to their mountain lairs. They delight in preying on
humanoid egos and spring traps when a would-be
treasure-seeker is most confident. Leng spiders thrive
on being underestimated.
Leng spiders have a complex society and are readily
able to wage war on those who infringe on their
territory. Unless in their homes, they rarely fight to the
death and will retreat if severely wounded.

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