They were large spiders, with multifaceted eyes and golden skin covered in hair. Its legs were twice as long as a fully grown human. It could distend its mouth in a scissors-like fashion, and it was filled with long fangs that dripped with golden saliva. Its abdomen had spinnerets capable of producing large quantities of golden silk. When wounded, it bled a light blue ichor.
Spellgaunts were capable predators. They were drawn by arcane energy, which they fed on, and could bite and eat magical items. Said items could be irreparably damaged in a few bites or stripped of their magic.
Despite its size, it was a very agile creature, capable of leaping on its prey and even contorting mid-leap in order to avoid dangerous weapons or threats. It was also capable of shooting large streams and swaths of golden silk from its spinnerets in order to entangle its opponents.
Despite its rare abilities, it wasn't very intelligent, as it would try to feed on magical energy that might be too dangerous, a decoy, or a trap.
Cavatina Xarann faced one of these creatures on her own. She dispelled its invisibility and fought with it, realizing its magic-consuming nature when she noticed that her sword had been dented and had bite marks, which wouldn't be possible to do for a mundane spider. Cavatina ended up conjuring a swarm of magical blades—the spellgaunt tried eating them for their arcane energy, but ended up cut to shreds. However, her sword Demonbane was completely voided of its magic.
- Sacrifice of the Widow
Magical spiders: Bloodsilk • Electric • Glass • Gaze • Goblin • Pet of Kalistes • Spellgaunt • Steeder
Planar spiders: Demonweb terror • Fire • Myrlochar • Phase • Tomb • Vortex
Constructs: Arachnar • Bone spider • Jade spider • Retriever • Spiderwalker • Stone spider
Outsiders: Bebilith • Darkweaver • Greelox • Inferno spider • Red widow • Yochlol
Creations of Lolth: Abyssal widow • Chwidencha • Drider (Vampire) • Shunned
Humanoids: Aranea • Chitine • Choldrith • Ettercap • Werespider
Miscellaneous: Kitthix • Neogi • Rhylfang • Susurrus
Undead spiders: Wraith spider