Inferno spider

Inferno spiders were elemental arachnids of fire native to the Elemental Plane of Fire.

Description
These large elementals bore a resemblance to spiders and appeared to be composed entirely of magma and flame. Transparent plates on their bodies revealed a swirling mass of molten rock that formed their internal structure, while flames danced across the bulk of their abdomen and legs in random patterns. They had eight blazing eyes that were generally devoid of any expression.

On average inferno spiders stood approximately tall, had a diameter of, and could weigh as much as.

Behavior
These elementals possessed only a limited intelligence, yet were still very cunning and tenacious hunters. They were intelligent enough to realize the benefits of allying with stronger creatures and could follow simple orders.

Abilities
These elementals had poisonous fangs, dripping in a sort of caustic liquid flame that burned victims from within. They could produce webs composed of a fiery substance. This substance kept them burning near indefinitely, but was vulnerable to cold-based attacks.

Combat
An inferno spider always began to engage their prey by attempting to entangle them in one of their webs. This allowed them to capture creatures that were otherwise too nimble or quick.

History
Following Halaster Blackcloak's death in 1375 DR, an inferno spider and a trio of magma hurlers crossed over into the Prime Material plane through a portal that opened in the Belkram's Fall area of Undermountain and proceeded to make their lair there.

Ecology
Inferno spiders lived largely solitary lives and avoided contact with others of their own kind.

Once in their life time, typically when one had become advanced in both size and years, an inferno spider would seek out a mate. Courting inferno spiders engaged a strange, ritualistic dance, during which they would circle each other for hours or, in some cases, even days. At the end of this ritual the two would charge one another, colliding and exploding into hundreds of newborn inferno spiders.

Very few of the resulting young would survive long. Partly because the enemies and predators of these elementals often hid near dancing mates, lying in wait to slay as many of their resulting offspring as possible. And partly because these young would attack their own siblings.

Diet
These elementals were voracious predators that hunted creatures weaker than themselves.

Homelands
Besides the Elemental Plane of Fire, these elementals could occasionally be found on the Prime Material plane in warm regions.

At least one inferno spider made its way to Faerûn by crawling through a portal linking the Plane of Fire with the citadel of Belkram's Fall in Undermountain.

Relationships
Weaker denizens of the Elemental Plane of Fire universally loathed these elementals. They were often in the company of clerics of fire deities, fire elementals, or groups of cunning salamanders. They were particularly attracted to individuals that possessed great arcane or divine power.

The vast majority of inferno spiders were servants of the deity Kossuth, whom they revered. To them he appeared as an enormous inferno spider of great age and strength. One of his faction of worshippers, the Burning Braziers, sought to introduce them to Toril as part of their quest to cleanse the world. However, for unknown reasons the deity only allowed them limited summoning of these elementals.

Trivia
Sorcerers, wizards, and clerics with access to the fire domain could summon inferno spiders through use of summon monster IV or a high level summon monster spell. Alternatively, such clerics could call them to their aid through use of planar ally. Accomplishing any of these required completion of a magical ritual that involved the power of fire opals worth 100 gold pieces.

Appearances

 * Adventures
 * Expedition to Undermountain