That's because Scarlet is so awesome. His greatness let him always flip the nasty debuffs back at the worst (best for him) ninja from your team.

He was born with it.

Maybe it's really just bad luck? Maybe it's Scarlet's magic?

I gotta test it on arena a bit- as Fire Main how that mirror targets enemies~~

On side note- I also got quite few complaints for Kushimaru always targetting best possible (for me) second ninja to use mystery on. Not quite true as it's not always so lucky. But moments of awesomeness happen.

so basically u are complaining your main / team eg: wind with female or lighting with swords last for 2 fully rounds with fully immunity pre-battle, and its covering females or what not all your swordsman? are some how its still under power vs genjutsu mirror that only works for 1 layer debuff and gone within 1 time its trigger per round and it can reflect to clone or puppet or even immunity and doing nothing? so u think u need all of your ninjas having shields while immunity? and hits rock solid hard? and leeching too? that alone is far from balance dude. its a random defect since u got no clone/s or puppet/s thats why its just defect to your other ninja that are available.

now lets flip the side u play as fire main vs equal enemy with LM and his swordman's within same bracket. will u still even consider "genjutsu mirror" is that GREAT? lemme answers that question: its not even a close as a passive skill, its heaven and earth. day and night.

Nearly cried one time in SWB due to Kushimaru. Player was about 35k below me, yet his Kushi mystery hit my two healers 3 times in a row T.T (he won too, that lucky sod)

Then why not use scarlet blaze on arena its the best

thisxD fire mains op

I used to hate a lot fire mains too, then i got a full immune team and they ceased to be an issue (except for itachi susano'o, shisui, madara teams, but those are whales so, do not matter).

that said the reason why you arw losing is simply the fact you are using sasuke susano'o. Iruka would work way better.

P. S: Kushina habanero to work fine strictly requires a repulse to lowfloat chase, so you need or to run azure fang (and infact with azure fang she is way overpowered due to poison tai and healing tips) or shisui/edo roshi/kurama naruto/edo haku. If you do not use her with one of those 5 options you are running a very subpar team and obviously you lose against sbs with mirror and also against whoever runs pain ningendo or kurenai.