This is a variation of Bring Your Own Two Teams. All the regular BYOTT rules apply, but with one catch: each of your teams must be from a different universe. This means that you may not have two DC teams, two Marvel teams or two Hellboy teams in your deck.
I will add one further rule... In addition to the approved ban list, I am going to add the cards "X-Men Assemble!", "Legendary Battles" and "Bamf!" to the ban list. These cards may not be included in your deck for this event.
So, who are you going to team up?