Board Thread:Questions and Answers/@comment-33273295-20171006170128/@comment-32271305-20171128113450

Well, as the description of the event says, he's weak against the GT link, so if you keep Omega Shenron and SSJ4 Goku next to each other, or next to Pan or SSJ Goku GT, they'll deal a lot more damage. If you're worried about his attacks you can use an item like Whis or Icarus. Android #8 and Princess Snake work, too.

If he locks the position of your characters, you can use Senzu Beans or Dendes to free them, since they "recover all HP and remove all allies' status effects".