Abnormally large spiders are always good foes to throw at PCs; so here are 5 new spiders re-skinned from page 90 of the Monster Manual (i.e. their stats are the same but their abilities and descriptions are different).
With the exception of the Phase‑Snatching Spider, they have all been inspired by unusual spiders found here on Earth.
1. Assassin Spider is a giant version of the normally sized ‘assassin spider‘. The Assassin Spider is a voracious ground hunter. It has an unusually long neck, which extends upwards about 6 feet and has two massive six foot long mandibles.
On a successful hit, it grabs and lifts its prey 6 feet into the air, holding them at bay. In this predicament, the victim’s AC is reduced by 4 (or by one class criteria, e.g. plate to chain, etc.). Generally, the victim is also unable to hit with hand weapons. The %chance to break from is twice the character’s ‘Bend Bars/Lift Gates’ (BB/LG) score.
The next round, the great mandibles begin their deadly work, pinching together like a pneumatic press. Each time a successful to hit roll is made the victim’s effective AC is reduced by another 4 units (or by one further armour class type), and one extra damage die is added, e.g. 2D4 (1st hit), 4D4 (2nd hit), 6D4 (3rd hit), etc. The next hit after the victim is at 0 HPs, results in the victim being pinched in half (the Assassin Spider’s goal), the mandibles meeting like a pair of giant chitinous secateurs.
2. Casting Spider is a huge version of a normal ‘net-casting spider‘. This spider weaves a man‑sized ‘net’ between its elongated front limbs and will try to ‘net’ any appropriately sized prey. It can jump 18’’, but prefers to descend stealthily above its prey on a line of web.
It surprises its victims 1-5 on a D6, gaining +3 to ‘net’ the victim. A netted victim is enveloped head to toe and cannot readily move their arms or legs. Typically, it will wait until its prey is off guard or distracted (e.g. sleeping or perhaps when they are in combat with another foe). On a miss, it will skulk off to weave a new net.
The %chance to break from the net is twice the character’s ‘Bend Bars/Lift Gates’ (BB/LG) score. However, each failure lowers the chance by 5%, as such wriggling tightens the net.
The spider comes feeds when the wriggling has stopped, when the prey is fully incapacitated.
3. Gobbing Spider is a large version of a normal ‘spitting spider’ and is nearly transparent. It has an unusually large head and when in range it blasts its prey with a mass of webs that are coated in strong poisonous and digestive juices.
The web is not very robust and halves the mobility of creatures with 9 or less strength.
Until the web is cleaned off, the digestive juices burn like acid, doing 1HP of damage per round per coating. A slow acting poison takes effect after 5 rounds of contact – save vs poison or fall unconscious for d6 turns.
These spiders generate enough web for three attacks and regenerate this in 24 hrs. After spraying their victims, these spiders jump on and bite their prey, latching on and draining 1HP per round while they are attached.
4. Phase-Snatching Spider is a relative of the Phase‑Spider (MM, page 90). Usually, the only visible part of this spider is their foot long fangs. The rest of the spider is normally in the ethereal plane. The spider will position its fangs to snare a victim (e.g. spanning a dark tunnel or placed in a position to attract the curious.
When a victim is in range, the spider will try to grasp them. A successful hit (+4 if the victim is unsuspecting) results in the victim being dragged into the ethereal plane, where the spider is then fully visible. The spider cannot attack for 1 round while it ensures its body parts are back in full harmony with the ethereal plane.
Unlike the Phase-Spider, this spider is only mildly poisonous (failed save makes PC hard to understand; e.g. player must talk with tongue between teeth). The spider has two glands, a big one that produces a fluid that acts like oil of etherealness and a smaller one that produces a fluid that counters this. If desperate, it will spray this second fluid (+4 to hit the unsuspecting) that will return the ‘victim’ back to the prime material plane.
5. Web Bolas Spider is a huge semi-intelligent version of a normal ‘bolas spider’. This spider normally hurls up to 4 sticky blobs of web at its prey before attacking. The spider needs a turn to make new web projectiles.
The hit location (D100):
- 1-10 – head (temporary blinding; -6 to hit; +6 to being hit)
- 11‑20 – primary arm (can’t use weapon arm; +2 to being hit)
- 21-30 – secondary arm (can’t use that arm; also +2 to being hit)
- 31-40 – right leg (+3 to being hit; movement is halved)
- 41-50 – left leg (+3 to being hit; movement is halved)
- 51-100 – chest (+1 to being hit; only 50% chance to draw a weapon; and only 25% chance to take an item out of a pack/pouch/pocket etc.)
While semi-intelligent, their natural instincts are to attack the prey hit by its bolas.
It also has a poisonous bite that induces hallucinations in most humanoids (a failed save vs poison results in -2 to hit in combat; and +2 to being hit). Goblinoid races, and by extension half-orcs, are not affected by the poison. Goblins have been known to have these semi-intelligent creatures as companion animals.
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