Beyond the dangerous beasts and evil inhabitants of
The Underdark, additional environmental hazards exist. The radioactive blightburn crystals are one such hazard. The incandescent green mineral emits harsh radiation which not only dimly illuminates the area around it, but also causes serious harm to anyone in its proximity.
Effects
Those who touch the stones are instantly burned and blistered by the intense radiological aura, taking 2d6 points of fire damage for each round they remain in contact with it.
Anyone within 60 feet of the stones is susceptible to a potent disease, also called blightburn, which causes increasing frailty, skin sores, hair loss, and brittle bones (see
Disease Details).
Magical Side Effects
Blightburn also affects teleport spells. Only powerful spellcasters are able to use teleportation to travel to or from an area in the proximity of blightburn, and even they cannot always do so reliably. Any teleportation spell cast within or teleporting to a cavern with blightburn in its walls must succeed at a DC 30
Caster Level check or it fails.
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