Saints yes, so what about fake saints? thats the one that is important after all ^^
What makes current Elrise particularly special is primarily that the MC trained continuously from a young age to become more powerful.
Villainess Elrise(original elrise) certainly was naturally gifted in magical talent, to the extent that her being a fake wasn't easily obvious. But she was simply just someone who was naturally gifted at something, not much different different from someone like Leila who is gifted with a sword. Or to use my previous Avatar the Last Airbender analogy, Elrise is not much different from Azula or Toph(naturally gifted benders).
(If you read the Avatar novels, Elrise is almost exactly the same as "Avatar" Yun. A talented earthbender who was mistakenly believed to be the Avatar instead of Kiyoshi(the real one). The only difference being Elrise also has the benefit of future knowledge, and 10+ years of training to become more powerful).
In simple terms though you could really just look at Elrise as being the same as Vernell. Just doing magic training(with nice base/growth stats) instead of vernells muscle training.
The point though is if you are trying to look at Elrise as something special, it's better to just think of her in a similar vein to the standard "I was reincarnated as a ordinary commoner, but by training to extremes for 10+ years, people mistook me as the hero". She's mostly so STRONK because she worked for it. If Elrise had been reincarnated as Eterna instead, there is a high chance she would be stronger following similar training.
"Theoretically" others could do the same.
No details, but really this story does tie everything all together and explain everything. It's kinda like a JJ Abrams mystery box, only the writer actually thought and planned everything out, and it all comes together in a satisfying way.
----------------‐-------------------------------
Now of course, if you are thinking ahead to how characters will react to the idea that Elrise, considered to be the greatest saint ever recorded(in terms of feats like monster subjugation and healing magic), is actually a fake?
🤐
Just get your popcorn ready and enjoy the ride. It's going to be good, even more so when compared to the real saints.