[@Holy Soldier] I have made the adjustments on the original post:

-I have changed his backstory to something that is hopefully acceptable
-His materia is not representative of the abilities listed on Anima's wiki page
-I have changed the limit so that it targets one individual and no longer involves instant death. I've changed it so that the first hit of the ten has a 50% chance of enacting despell and debarrier. I would obviously prefer to have it be 100% but I that'd probably be too OP

If there are any further issues let me know and i'll sort what I can.