Type: Inhaled Poison

Description: The Necrotic Miasma is a concoction of decay and dark magic, filling the air with a thick, unbreathable gas. Crafted by a nefarious alchemist or mage, this poison combines volatile necrotic energy with the natural gases of decomposition to create an environment that is not only toxic but suffocating. The air is so saturated with poison that even successfully holding one's breath does not prevent the inhalation of trace amounts of the toxic fumes.

Trigger: Necrotic Miasma most commonly forms in small, enclosed spaces packed with decaying corpses, such as sealed rooms or dungeons. The decomposition of bodies releases gases that, when infused with dark magic or specific alchemical processes, become the deadly miasma. This transformation can occur naturally over time in places saturated with death and decay.

Initial Effect: Upon exposure, all creatures within the area must make a DC 19 Constitution saving throw at the beginning of each turn spent in the miasma:

• On a Failed Save: The creature takes 1d6 acid damage (representing chemical burns) and 1d6 poison damage (representing respiratory distress), and suffers from the Poisoned condition for 1 minute.
• On a Successful Save: The creature does not take damage or become poisoned. However, the toxic nature of the air means they do not receive any actual oxygen, leading to potential suffocation as per D&D rules on holding breath.

Secondary Effects:

• Extended Exposure: Every consecutive round a creature remains in the miasma, the DC for the Constitution saving throw increases by 1. If a creature fails three saves in a row, the damage from both acid and poison increases to 2d6 for each type.
• Paralysis: If a creature fails their saving throw by 5 or more, the overwhelming toxins paralyze the creature. This paralysis lasts until the creature is removed from the miasma and receives magical healing or until they pass a saving throw at the end of one of their turns after exiting the miasma.