have to stop 1 or 2 of them from using their skill....immobile combos work to do that....
Mei, Danza, earth main and so on.... once you immobile 1 or 2 you can take out them then HEAL....they use that ninjutsu every round.... you have to have a healer, a immobiler, someone would will cause combo and a shielder.
Mei, water main, sailor sakura, ao.....works but u need 40k power probably....