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Poison

Base: ELECTROMAGNETISM

Physics: Targeted chemical disruption. Introducing or catalyzing molecular reactions that corrupt biological chemistry. Not general disorder (Entropy). Specific, surgical biochemical sabotage. This is EM at the molecular-interaction scale.
Signature: The wrongness. Something in the air the body knows is bad before the mind can name it. A faint sweet-sick smell of chemistry gone deliberately sideways — not rot, not decay, something sharper, more specific, more designed.

F-rank. Touch a piece of fruit and watch it darken — not rot (that's Decay), but discolor, the specific browning of cellular damage, as if the fruit has been bruised from the inside out. Touch a leaf and it wilts, curling inward, the edges going brown-black in a way that looks like a photograph of dying rather than dying itself. The effect is small, slow, limited to sustained skin contact. The smell is faintly sweet and faintly wrong — overripe fruit, flowers left in water too long, something biological going off in a way the nose identifies as chemical rather than organic. Not the wet stench of rot. A drier, sharper wrongness. The user's own hands carry the smell after use — they wash and it fades but it lingers under the nails for hours, and the people near them notice even when the user doesn't. On Awakening Day, when the mark first manifests: the nearest organic material darkens, wilts, and the room goes quiet. Not the gasp of Gravity. Not the applause of Lightning. Silence, and the half-step back from the people nearest, and the guild assessor writing the type in the ledger without looking up. That silence is the sound Jess Harrowfield will carry for the rest of her life.

E-rank. Can introduce specific reactions — make a person nauseated with a touch, numb a wound's edge for a field medic, make a drink turn in the glass. The effect is faster, no longer requiring sustained contact. A brushed hand on a bare arm leaves a rash that blooms in minutes — not a burn, not an allergy, a targeted histamine cascade triggered by the mark interacting with the target's biochemistry. Can neutralize other poisons — the antivenom application, the one that pays. A Poison user's hands read toxicity the way a Healer's hands read injury: they feel the chemical state of what they touch, and they know what's wrong, and they know what made it wrong. The sweet-sick smell sharpens. Other people notice it now — a faint chemical tang in the air near a working Poison user, like the back room of a pharmacy where things are measured by the drop.

D-rank. Precision targeting. Can isolate a specific biological system — disrupt digestion without touching the nervous system, paralyze a limb without poisoning the blood, introduce a compound that makes a wound refuse to clot while the rest of the body functions normally. The surgical quality is what separates Poison from Decay at every rank: Decay is general entropy, everything coming apart. Poison is specific — this pathway, this reaction, this molecule, and nothing adjacent. Can cure what they cause: every toxic pathway they introduce, they can reverse. The visual at D-rank is the branching veins — a touched surface develops a faint discoloration that spreads in tree-like patterns, following the material's own structure the way a stain follows wood grain. On skin, the lines are unmistakable: dark traceries branching from the point of contact, the body's circulatory system turned into a visible map of the poison's reach. They fade in hours. While they last, no one in the room looks at anything else. The sweet-sick smell has a metallic undertone now — copper and coin. The user's own chemistry is shifting: they metabolize faster, resist toxins instinctively, their liver runs hot. A D-rank Poison user is the hardest person at the table to get drunk, and has been since before they understood why.

C-rank. Airborne. No longer requires touch. Can introduce reactive compounds into the air — a zone of nausea, a cloud of paralytic mist, a veil that makes eyes water and lungs burn at the threshold. Can purify water by catalyzing the breakdown of every contaminant in the vessel. The branching-vein visual becomes pronounced at range: a C-rank Poison user working on a target across a room leaves visible dark traceries under the target's skin that fade but cannot be mistaken for anything natural. The air around a working C-rank Poison user has a presence — not a smell exactly, but a chemical weight, a sense that the air contains something it shouldn't, the way you know a room has been freshly painted before you consciously register the paint. Plants near sustained use droop. Cut flowers in a vase wilt without being touched. Small insects die on the windowsill. The stigma at this rank is reinforced by the ambient effect — a C-rank Poison user's mere presence in a room makes living things subtly worse, and everyone knows it, and nobody says it to their face.

B-rank. Biochemical architecture. A B-rank Poison user doesn't introduce toxins — they redesign biochemistry. Can rewrite a body's metabolic pathways with sustained focus: make a person's immune system attack a specific tissue, make the liver stop processing a specific compound, make a wound heal backward. The precision is surgical, reversible if the user chooses. Can create custom antidotes by feeling the toxic pathway and engineering its exact reversal. The branching-vein visual extends into the air itself — faint dark threadlike patterns near the user during sustained work, as if the chemistry of the atmosphere is being rewritten in visible traceries that dissolve when you look at them directly. The chemical weight in the air is heavy enough that sensitive people get headaches, and animals leave the room. The user's own body is profoundly resistant now — not just to toxins but to disease, their immune chemistry running at a frequency that pathological organisms cannot match. A B-rank Poison user does not get sick. Has not been sick in years. Their blood, if drawn, smells faintly of something floral and wrong, and the physician drawing it always hesitates for a moment they cannot explain.

A-rank. The user perceives biochemistry the way a Healer perceives bioelectricity — every chemical reaction in every body within range is visible to them, a web of metabolic processes in constant motion. Can introduce a targeted compound into a specific person across a room — a single catalyzed reaction in the target's bloodstream triggering a cascade that mimics any disease, any condition, any metabolic failure, undetectable by any diagnostic tool because it is not a poison, it is the body's own chemistry pointed in the wrong direction. Can cure the same way: find the one reaction that's wrong and correct it with a precision that no alchemist can match. A-rank Poison and A-rank Healing arrive at the same medical capability from opposite directions — one through bioelectricity, the other through biochemistry — and the two working together are the most effective medical team on Eldra. The social irony is that the Healer is thanked and the Poison user is watched. In repose, an A-rank Poison user's ambient field makes the air clean — not stripped (Ice) or scrubbed (Fire) but chemically purified, every airborne contaminant neutralized, every pathogen inactivated. The cleanest room you have ever breathed in. Nobody thanks them for it.

S-rank. Regional biochemical control. An S-rank Poison user perceives the chemical state of everything alive within range — every plant, every animal, every person, the bacterial ecology of the soil, the compound structure of the water table. Can introduce a targeted plague — a contagion that affects only one bloodline, or one sex, or one age cohort — or can halt one already spreading. Can purify a city's water supply by catalyzing the breakdown of every contaminant in the system, from the reservoir to the taps. Can make a forest bloom or make a field die, and the difference between the two is nothing more than which reactions they choose to catalyze and which they choose to silence. The S-rank Poison user is the Healer's dark mirror, and at this scale the mirror is almost perfect: where the Healer runs the body's electricity faster, the Poison user runs the body's chemistry in whatever direction they choose. In repose, the air within their range is the cleanest air in the world. The water is the purest. Food does not spoil. And everyone nearby is aware, at a level below conscious thought, that the reason everything is perfect is because someone is choosing to make it perfect, and that the same someone could choose otherwise, and that the choice is being made continuously, right now, every breath.

SS-rank. Molecular chemistry as language. An SS Poison user does not introduce reactions — they speak to biochemistry, fluently, at the molecular level, the way a musician speaks to an instrument. Can redesign a living organism's metabolic architecture: rewrite how a body processes food, how it fights infection, how it ages. Can create compounds that do not exist in nature — medicines no alchemist could formulate, toxins no antidote could address, catalytic reactions that operate by rules the world's chemistry has never imagined. In their presence, the chemical world is a conversation, every molecule a word, and the SS Poison user is the only fluent speaker in the room. The air around them does not merely feel clean — it feels intentional, every molecule in its place, by choice, and the choice is ongoing.

Population context. SS Poison users in the founding era were the most feared of the Seventeen's assets — not for what they did but for what they could do and chose not to. The sealed archives contain one detailed account: an SS Poison user who ended a siege by walking into the enemy capital and sitting in the central square for three days. By the end of the first day, every soldier in the garrison was too ill to stand. By the end of the third, the city surrendered. No one died. The Poison user left. The garrison recovered within a week. The point had been made. The guild considers SS Poison extinct. The guild is quietly grateful.

SSS-rank. The practitioner is biochemistry made conscious. In their presence, the chemical state of every living thing is a parameter they set, not a process that runs on its own. Disease is a word they can speak or unspeak. Metabolism is a rate they choose. The boundary between medicine and poison — already thin at S-rank, already academic at SS — ceases to exist entirely. There is only chemistry, and the practitioner is fluent, and every molecule in range is listening. The aftermath of an SSS Poison user is not death or disease or ruin. It is change — an ecosystem rewritten at the molecular level, the chemical relationships between every living thing in a region renegotiated. A forest where the trees produce different fruit. A river where the fish carry different pigment. A battlefield where the grass grows back in the wrong season because the soil chemistry has been told to keep a different clock. Nothing is killed. Everything is altered, and the alteration persists for generations because it was written into the chemistry itself, not imposed on it from outside.

Population context. The sealed archives reference regions that still carry the chemical signature of a pre-compact SSS Poison practitioner. Soil that grows crops no other soil can support. Water that cures ailments it has no business curing. Orchards that bear fruit in winter. The locals attribute it to blessed ground. The ground is not blessed. It was spoken to, centuries ago, by someone who understood what it was made of, and the conversation never ended.

Not to be confused with:

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