That an interesting idea but i think that avenger even worked is bc revis was a creture also aiz has a huge hatred for monsters, while ox slayer is a type slaying abilite so it only works on minotarus and bell doesnt have the same mind set as aiz so i dont i would work also i think ox slayer only works on minotaurus while aveger works in general just it works better on dragons i think you confuesed me a bit with this question so if i am wrong correct me.

That what you ask and describe of Aiz skill is not how it really works tough. Aiz Avenger works generally on all monsters and is strength is boosted based on her hatred and it is especially effective against Dragon type monsters. Revis was half Monster and Half Human which makes her a hybrid but she still fills the rules of Avenger and that is being a Monster so no Aiz didnt really cheat or exploit the Falna System.

That would as well go for Bells Ox Slayer skill which is even more restrained then Aiz Avenger skill because it onle works on Bull type Monsters.

In so11, when she was training with ottarl, she made revis image overlap with ottarl and her back burned.

That is why i decided to ask this

Maybe it burned bc she tried to cheat the system so falna on her back backfired to warned her that it wouldnt work?

I do not think that is how it works.

Yeah you are probably correct what i said was just pure fanfiction XD