Magics are created and based on existing concepts in the world, but some things just don’t make sense.
Things that shouldn’t be magics
First we should establish, things that are just combinations between magics are fair. Arcturus, Poison Lightning, those are fair. They put the magics together and made something nonsensical.
However, some things are neither combination nor sensible
Phoenix
Right so we have a magic based on a fictional/legendary bird of rebirth? No. How did they make that into a magic?
Ancient Lightning
What is this even supposed to be? It can’t be based on lightning that forms naturally in the Dark Sea, right?
Flare
Flare itself makes sense, but not with the existence of Sun Magic.
Flares come off of the sun, so wouldn’t Sun Magic already encompass solar phenomenon such as Solar Flares?
Need I remind you gods and dragons exist in this verse?
We got poisonous magic rain and the thought of a phoenix shocks you?
They probably do exist in verse, just rare/extinct
that’s why one is lost and one is ancient.
One is a flaming hot burst of radiation, the other is the entire nuclear reactor currently going supercritical.
The progression doesn’t matter since flare and sun are mutations of fire. Same for plasma being a mutation of fire magic. You can argue that Equinox is a lost magic if we use the progression side of things since Shadow or Light can become Equinox.
Combination magics (e.g. Frostmetal) are inherently uncreative. Don’t see why you couldn’t just cast two bases simultaneously to get the same effect. Only thing that would save them for me is looking cool.
For the other part: Plant magic. Hopefully it’s a lost.
equinox is different because its whole deal is that these two things are explicitly NOT supposed to mix, and yet here this dumbass is, pouring water directly onto the grease while pointing it at something.
Names were chosen by the magic’s creator. Since Phoenix Magic is basically healing fire, the creator just thought it would be accurate.
That’s the in-universe explanation.
The IRL explanation is just one word: retcon
The storms in the dark sea are caused by massive amounts of magic energy no? So basically any large event in the past that could be assumed to have had a lot of magic energy involved could have had the red lightning already. The creation of the earth, the war between the gods and titans, and anything of that nature. If whoever first got ancient lightning knew of literally any event in the past like that, just any legend that said “in [INSERT EVENT HERE] there was a lot of powerful red lightning” then naming it ancient lightning would be pretty fitting to them.