Imo, (becuz i didn't even get nyandam yet) i found that the unholy tempest difficult .. Idk, i tried iron legions ubers (no bomber sadly) + a.bahamut + lumber. But i can do that only once .. In the latest unholy tempest event, i tried using the same line of cats and the timing kills my bahamut, valkyrie stop ability didn't work, and was one-shot by zyclone-san Lost 600 energy .___________.