|“||…Magical radiation, as we all know, is a side effect of powerful and wicked magics released violently on Equestria. Naturally, the biggest and worst zones of radiation are found in places like the Fillydelphia Crater, the Manehattan city center… pretty much everywhere the megaspells hit except for Cloudsdayle and Canterlot (both of which should be avoided for other reasons). But even a recently exploded skywagon can be radioactive. Fortunately, so long as you always carry your radiation detectors, kids, these places can be avoided.||”|
An ubiquitous presence in the Equestrian Wasteland, balefire radiation is the magical residue of the larger,
harmful spells that used balefire. When a living creature is exposed to it, it accumulates in one's body over time. A creature can withstand small amounts of radiation poisoning without severe consequences, but as it piles up, it causes sickness, mutations, and potentially death. It possesses a strong necromantic component, and prolonged exposure is often the cause of mutations of varying degrees. Most such mutations can be harmful, but not always, and a restricted few can prove advantageous to the host. Ponies and zebras who survive severe radiation exposure are turned into ghouls.
After the Great War
It has blanketed the lands of Equestria (and presumably the Zebra Empire), and has been absorbed by all matter, including air, earth, food, and water. Its concentration in most open places is next to none, but several locations are still severely contaminated.
Protection and Treatment
Air filters are capable of purifying the air from radiation, and water talismans exist for cleansing contaminated waters. A living creature can be made resistant to radiation exposure by way of Rad-X, and if radiation is already in the body, Rad-Away allows the user to purge it from one's body and reverse its temporary effects, but there is no known way to reverse ghoulification
Variants in Side Stories
Ghostfire (The Last Sentinel)
Ghostfire is a form of Balefire employed in melee weapons. Ghostfire unlike balefire lacks the long-lasting, deadly radioactive effects. Ghostfire burns through armor and flesh with an intense heat, but does not spread to other targets and cannot be extinguished by non-magical means. Ghostfyre is employed in Azrael Razorwing's Ghostfire Scythe, Valkyrie.
Balefrost is a frozen form of balefire, emitted from Balefrost Dragons. The frost is capable of cryogenically preserving living organisms and reacts negatively to the magical fields of unicorns. Magic causes balefrost to emit massive amounts of radiation. Balefrost does not cause frostbite or frostburn, unlike real ice.