Miasma body:
User can create a poisonous violet miasma from their body similar to Midnight's quirk except that it works regardless of gender. Physical touch when quirk is active is another way to poison targets. The miasma's damage will also pile on even against regeneration or heal type quirks so battles of attrition are advantageous to the user.
Moreover, the miasma is deadly to all living things but the user can control the potency of the poison so as to paralyze or weaken the enemy vs out right killing them. The user can even turn into miasma itself allowing them to disperse into the air to escape, attack opponents by swiftly covering a wide area, or allowing access to hard to reach places such as air vents, travelling through cracks in the walls, etc. Corrosion of metals and building materials such as concrete, wood, and bricks is also possible but it's not instantaneous.
Furthermore, they can quickly change their miasma state at will such as from gas to solid (deposition or desublimation) for example, and use it to attack. As such, it's possible to turn the miasma into spikes and telekinetically control it to stab targets or turn them into marbles that later subsequently explode like smoke bombs to release gaseous miasma. There are many applications considering how easy it is to change the miasma's state (gas, liquid, or solid) so its versatility helps make up for the lack of firepower.
In addition, due to the quirk's high toxicity the user is immune to most poisons and venoms. Exposure can help build resistance to new toxins and can even stimulate the user's body to create antitoxin to counteract the poison which can actually be extracted, purified, and used as medicine.
What Miasma Body doesn't have in terms of destructive power, it makes up for in its versatility. The user can poison enemies, create toxic areas using gaseos miasma, can corrode certain materials to cause damage to structural stability of buildings and create hazards/traps for opponents, etc. Thus, the user is able to fight alone or with a team though the former may be difficult depending on the opponent's quirk/abilities. They can support teammates form afar or even be of some help in a situation where medical is required by being able to process toxins that their allies might have been exposed to and helping create antidotes for them.
Drawbacks: dry flaky skin, temporary painful hepatitis due to the overexertion of the liver in processing and detoxing the body, hemolytic anemia, followed by jaundice (yellowing of the skin, eyes, etc), nausea, and exhaustion. If overuse is severe enough it can leave the user feeling sick, bedridden, and exhausted for up to 12 hours. Nonetheless, the body can recover after plenty of rest, hydration, and proper nutrition.
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BNHA Quirks/Some Prompts
FanficThese are some random quirk ideas that you can use in your writing or to spark your own version! I may include the occasional one shot ideas too. Also if anyone uses the quirks or oneshot ideas to write something, then PLEASE FOR THE LOVE OF ULTRA...