Our wrestlemania options

Forgetting this is a disaster and a show that shouldn't be running, with Reigns out, how do you book the Goldberg title match out of these options:

1) Winner of Cena / Bray on night 1 gets Goldberg night 2

2) Battle Royal

3) Night 1 tournament

4) Mystery opponent

5) Matt Riddle

6) Crazy other idea

Your thoughts?
So we're eliminating "cancel the show" as an option then?  I like the idea of Cena-Fiend determining who gets Goldberg.  Plus then you're using one less person.