Although very strong, the Kotodama Devil isn't the strongest entity within the Black Clover verse.
No human characters have been described as being able to beat the Kotodama Devil in a one-on-one confrontation. However, another devil has been described within the universe as stronger than the Kotodama Devil.
The curse was made because she turned someone to stone, but I guess she turned back into a human when she brought the statue to "life".. I just went with it, thinking it was considered an "equal exchange".. I have no idea why she could talk to Finral as a bird though..
Well, In the latest episode we learn that Nero is 500 years old.. That's around the time of the first wizard king and the fall of the elves.. I believe that Nero played a part in hiding the magic stones after what happened with the elves, just in case something like that happened again! I tried my best not to spoil anything, you find out everything that ...
I think it is related to magic stones, after using forbidden magic, again and again, she turned into the bird and also the magic stones were lost. elves collected all the magic stones which help in turning back the wizard king into his real form and also the Nero. but I have a question of why she didn't speak to anyone earlier in any chapter. she only spoke ...
I don't think you can call him so powerful, as an elf he is powerful than human we all know that.
He is powerful because of 3 main reasons:
William Vengeance body
four-leaf clover grimoire
We all about elves magic power so no discussion.
He got the most powerful human body of William Vengeance who rank just after wizard king in ...
in my opinion it is because he has been sealed by nero A.K.A secre swallowtail by using a magic stone and probably also because it has been a very long time since he was sealed and the wound healed by itself