Some stuff can be magic-like, but I think it’s more interesting if it’s somewhat explained and is perhaps achievable technology in the near/distant future (is 42 years near or distant?)
This technology can be anything from Reinhardt’s bomb on a stick, to Soldier: 76’s super soldier serum overdose, to Reaper’s CRAWLING IN MY SKIN, to Illari getting a tattoo from the sun.
Most healing is just nanobots son. Mercy has a stream of nanobots in her staff that either repair your cells (like a million different surgeons operating on you at once) or making your gun more powerful (like a million different engineers operating on you at once).
Ana put Mercy’s tech into a gun, Baptiste probably has something similar, as does Soldier: 76.
Roadhog distils something, maybe Fanta, maybe leaded paint, but whatever it is it heals him and it tastes good.
Moira doesn’t use nanobots, instead her necrotic arm drains the life out of cells, then Moira collects the dead cells in the tank on her back, and her machine turns these dead cells into zombified antibodies that she sprays out on people to accelerate their cellular repair (like a millions different surgeons telling you how to operate on yourself at once).
Moira canonically cannot heal or damage Omnics as they have no organic cells to manipulate or destroy. I guess there’s also no reason to suggest that Mercy’s or anyone’s healing can affect Omnics in the lore either.
Symmetra’s arm and gun condense light into physical material, like laser beams or automated sentry turrets. I’m going to say that these laser beams can cut through atoms in the air, and manipulate them to become different atoms, so structures can literally be built out of thin-air by having atoms cut into shape.
Lifeweaver’s can probably use this same logic to make plants. I looked it up and plants are made out of a combination of hydrogen, oxygen and carbon atoms I guess? So yeah, I guess Lifeweaver can cut atoms into artifical plants. If Symmetra can instantly build an automated sentry and a teleporter, Lifeweaver can make plants with all of the chlorophyll or whatever plants need to function, except its pink because Lifeweaver is zesty.
Hanzo and Genji perhaps commune with an AI. Not a God AI like Anubis or maybe Athena, but a smaller AI that’s more about ‘call and response’ and it can’t really think for itself. The dragons are powered by ChatGPT I guess…
If Hanzo need to obliterate his enemies, the AI tells the nanobots in his tattoo to “LMAO just summon 2 dragons, it’ll be funny”.
If Hanzo needs to aura-farm, the AI tells the nanobots in his tattoo to “LMAO just summon 2 dragons, it’ll be funny”.
If Hanzo needs to butter his toast, the AI tells the nanobots in his tattoo to “LMAO just summon 2 dragons, it’ll be funny”.
Wuyang uses his staff to pressurize and shoot out water. This water is laced with the healing nanobots that Mercy pioneered, so that’s why they can heal, and his healing works exactly the same as Mercy’s does from the gameplay trailer it seems.
Since the water is full of microplastics nanomachines son, Wuyang can also freely change it’s direction with the maglev technology built into his glove, which is why he points to where the water needs to pivot.
The nanobots just fly back inside the staff and Wuyang just finds some more regular water to refill his staff, or maybe the nanobots bring the water back too.
I guess the nanobots could also purify water too, making it safe to drink and eliminating microplastics. Wuyang just wanted to put his water into a gun.
Illari got solar-powered tattoos all over her body. Perhaps she functions like a living battery now, either using her body’s own chemical reactions to fuel her gun, or maybe it’s even just microscopic solar panels all over her body that absorb and condense sunlight into a laser beam.
Also obligatory nano-bots because a solar-powered laser beam is performing surgery on a bullet wound. I guess she just charges her nanobot army?
Ramattra is confirmed to also have nanobots, but I guess not the healing kind. Maybe he designed them himself because they are bigger and more violent.
The orbs perhaps have their own technology inside of them and respond to the temperature or chemical reactions of its human user, and likewise the electrical connection emitted from Omnics. Zenyatta gave Symmetra an orb in one of the comics, so that’s why I think it reacts to humans as well, otherwise Zenyatta is throwing.
Zenyatta as previously mentioned uses electrical signals to ‘call and respond’ with his orbs, but the floating is probably just maglev.
I imagine that the Shimbali aren’t all that magical because of their religion, but instead they feel a spiritual connection because a part of Aurora is literally inside of them. She communicated with every Omnic when she sacrificed herself, so a part of her programming must be in all of them, and they are all copying her programming, which gives them sophisticated enough minds to simulate intelligence.
I don’t think we’ve seen Zenyatta float in lore, he was either meditatin on the ground at the end of the Invasion PvE mission cutscenes, or just standing like a goofy goober next to Genji in some of the teasers from…February 2021…damn 
.
I have no idea how to explain Kiriko, she is so stupid and I hate her.
Kiriko is 17 years older than she is currently, so she’s 38 now, and maybe her Kitsune shrine are also religious/spiritual in the same way as Zenyatta, but they only commune with ChatGPT in place of their fox gods. Kiriko also summons a spirit fox made out of nanobots whenever she needs to aura-farm.
