Board Thread:Event Help/@comment-32431739-20170804195050/@comment-32510639-20170804200630

You can try mono STR

Leader: Omega Shenron

Gogeta

Majuub

Trunks SSJ GT

Paikuhan

Gotenks SSJ

Friend: Goku SSJ4/Omega Shenron/Broly LR

Including the friend(Broly LR dont) you will have 4 characters with the link GT, so you should be able to beat the event with no problem, just make sure to take the best rout to the boss

http://dbz-dokkanbattle.wikia.com/wiki/The_Shadow_Dragons_of_Despair