I've done it today, used 2500 Keys cuz there was a cave rebate event at the 7 days of melfare :DD... and can you tell which treasure tool is effective with which ninjas or events like arena 3v3" or arena in general and matsuri challenge"..i see you use 4 ropes . I use 1 different treasure tool for each ninja in the lineup .. شكلى هرخم عليك وهجيلك ديسكورد تانى :DD
use rope for all of them although there are some little exceptions, for example if you have a controlling pos2 like itachi edo or ibiki u might want to give him the gourd => more control