D&D 3e (3.0/3.5) Rules
Its black dragon head rising threateningly over the thick webs, you realize far too late the true nature of the abomination confronting you. Spider eyes fixed upon you, four pair of arachnid legs scratching the ground, its massive body lacking a tail, one of Jiathuli's last children is about to unleash its fury.
Dragon (extraplanar, water)
Spider dragons are the greatest success Jiathuli ever achieved, but also the reason behind her banishment from the Abyss. The demigoddess was able to persuade black dragons to crossbreed with whisper spiders in a ritual aimed to create her own draconic race, but her joy was nothing compared to Takhisis's fury when the Queen of Darkness knew of her treachery. Spider dragons are ferocious and cunning, but lack most magical abilities common to other dragons. Spider dragons prefer to lure prey into carefully crafted traps or narrow spaces where their breath weapon can make the difference. Physically, they still possess draconic features, but modified to a certain extent: no tail or wings, eight agile spider legs apt for climbing but not for swimming, and many arachnoid eyes adapted to living far from the light. Wyrmling spider dragons develop a draconic, chitin-reinforced skin that thickens as the dragon ages and dulls the usually-shining black scales.
Although Takhisis destroyed all but a lucky handful, spider dragons tend to be solitary. They mate at the young adult stage, with the female laying clutches of eggs among which all but one or two are devoured by the progenitors. Outside the Deathdark, Jiathuli's demiplane, they just appear in deep caves, unknown even to most dwarves.
Spider dragons speak Draconic and Common, which they use to mock or bluff enemies into battle.
Strategies and Tactics
Spider dragons barely possess a few magical abilities, all related to spiders. Because of this, they tend to employ a combination of brute force and the careful use of their breath weapons. When hunting, the dragon will closely follow a chosen prey to evaluate its skills and will attack when less expected, saving its acid breath until necessary. Inside its lair, it will hide behind a labyrinth composed of many layers of webs, mocking and luring their opponents into pits or narrow spaces where it can use the web breath to capture them for posterior enjoyment or the acid breath to kill a dangerous foe. Melee combat is used when the enemy is weakened enough not to be a risk.
Breath Weapon (Su): A spider dragon has two types of breath weapon. The first is a cone of web-like film. Creatures within the cone must succeed at a Reflex save to avoid a slow effect. Furthermore, everyone in a web-covered area suffers -3 to attack and damage rolls. Consider every 5-foot section of web to have 10 hp and DR 15/magic. The dragon is immune to this effect. The second variant is a corrosive line dealing acid damage as noted below. Creatures in the line of effect are allowed a Reflex save for half damage.
Spell-Like Abilities: 3/day—Summon spiders (old or older), poison (ancient or older), charm spiders (great wyrm); at will – spider climb (juvenile or older), web (adult or older).
Summon Spiders (Sp): This spell-like ability works exactly as the summon swarm spell, but only summon spiders.
Charm Spiders (Sp): It works exactly as mass charm monster but only functions with spiders of any kind.
Skills: Climb, Jump, and Spot are considered class skills for spider dragons. A spider dragon can always take 10 when climbing.
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