Well, there will probably be breakers dungeon every day, too.Looking at the various Technique monsters, I might be able to put a team together. Have 2 Highlander types(1 to lead 1 as sub), Vamp, Phoenix Knight, and for the last slot could either finish up Blue Mystic Knight or level up the green blob for one shot 27x power. Just brainstorming.
Edit: Event info
So unless there's more info coming, Valk is unrelated and this event is pretty fuckin' weak=P