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Trapdoor Spider (4e Monster)

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Date Created: 1st January 2009
Status: Complete
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Trapdoor SpiderEdit

Trapdoor spiders are the ultimate ambush predators. They typically build a large burrow with a camoflaged trapdoor of dirt and silk to hide under. When prey passes by the trap door, the trap door spider pounce upon the unforunate victim.

Ctenizid Youngling
Level 3 Minion
Large Spiderkind Beast (Spider, Ctenizidae)
XP 38
Initiative +8 Senses Perception +3, Tremorsense 10
HP 1; a missed attack never damages a minion.
AC 17; Fortitude 15, Reflex 16, Will 15
Speed 6, climb 6 (spider climb)
BasicMelee Bite (standard; at-will) ♦ Poison
+8 Vs. AC; 10 poison damage.
BasicMelee Pounce (immediate interrupt; when an opponent moves within 2 squares; at-will) ♦ Poison
While in burrow; +8 Vs. AC; 14 poison damage, and the target is grabbed and pulled into the ctenizid youngling's burrow. The ctenizid youngling cannot use this power if it has already grabbed an enemy.
Burrow
The ctenizid youngling has a camoflaged burrow (large sized) within which it hides. It requires a perception check opposed to the ctenizid youngling's stealth check to see the burrow.
Alignment Unaligned Languages Spydric
Skills Stealth +19
Str 14 (+3) Dex 17 (+4) Wis 14 (+3)
Con 11 (+1) Int 5 (-2) Cha 9 (+0)


Ctenizid Adult
Level 14 Minion
Large Spiderkind Beast (Spider, Ctenizidae)
XP 250
Initiative +13 Senses Perception +12, Tremorsense 10
HP 1; a missed attack never damages a minion.
AC 28; Fortitude 23, Reflex 28, Will 23
Speed 6, climb 6 (spider climb)
BasicMelee Bite (standard; at-will) ♦ Poison
+19 Vs. AC; 15 poison damage.
BasicMelee Pounce (immediate interrupt; when an opponent moves within 2 squares; at-will) ♦ Poison
While in burrow; +19 Vs. AC; 24 poison damage, and the target is grabbed and pulled into the ctenizid adult's burrow. The ctenizid adult cannot use this power if it has already grabbed an enemy.
Burrow
The ctenizid adult has a camoflaged burrow (large sized) within which it hides. It requires a perception check opposed to the ctenizid adult's stealth check to see the burrow.
Alignment Unaligned Languages Spydric
Skills Stealth +28
Str 20 (+12) Dex 23 (+13) Wis 20 (+12)
Con 17 (+10) Int 11 (+7) Cha 15 (+9)


Ctenizid Ambusher
Level 25 Minion
Large Spiderkind Beast (Spider, Ctenizidae)
XP 1750
Initiative +25 Senses Perception +19, Tremorsense 10
HP 1; a missed attack never damages a minion.
AC 28; Fortitude 23, Reflex 28, Will 23
Speed 6, climb 6 (spider climb)
BasicMelee Bite (standard; at-will) ♦ Poison
+30 Vs. AC; 24 poison damage.
BasicMelee Pounce (immediate interrupt; when an opponent moves within 2 squares; at-will) ♦ Poison
While in burrow; +30 Vs. AC; 36 poison damage, and the target is grabbed and pulled into the ctenizid ambusher's burrow. The ctenizid ambusher cannot use this power if it has already grabbed an enemy.
Burrow
The ctenizid ambusher has a camoflaged burrow (large sized) within which it hides. It requires a perception check opposed to the ctenizid ambusher's stealth check to see the burrow.
Alignment Unaligned Languages Spydric
Skills Stealth +36
Str 25 (+19) Dex 28 (+21) Wis 25 (+19)
Con 22 (+18) Int 16 (+15) Cha 20 (+17)

Trapdoor Spider TacticsEdit

Trap door spiders lie in wait in their burrows until a creature passes within 2 squares, at which point the spider uses pounce to drag the unfortunate victim into its burrow. Once a creature is inside the spider's burrow, the spider will bite the victim repeatedly until it dies.

Trapdoor Spider LoreEdit

A character knows the following information with a successful arachana or nature check.

DC 10 (arachana), DC 15 (nature): Trapdoor spiders are ambush predators. They typically lie in wait under trapdoors and pounce on passing prey.
DC 20 (arachana), DC 25 (nature): Though trapdoor spiders are typically solitary, some are members of so-called "spider colonies". Such colonies cannot exist without guidance from a more intelligent being, such as an arachnomancer or demonspider. Within colonies, trapdoor spiders are usually used to guard important areas of the colony.

Encounter GroupsEdit

Trapdoor spiders regard most creatures (even each other) as prey, though they may be found among other spiders or spiderkind.

Level 3 Encounter (XP 750)Edit



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Back to Main Page4e HomebrewSourcebooksArachonomicon; the Book of SpiderkindMonsters.

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