Wars of the Wizards 2

It seems like there’s a strange system with template selection in the group. You have to be prepared to play on any of the 11 templates, even the ones you consider the most absurd, if your opponent is blue. How will the pair of templates for a round be determined, from which the blue player chooses one? It was mentioned that the tournament is open, and many “newbies,” for example, don’t like HL+U, hence the pool of templates, but isn’t it strange to force everyone to prepare for all 11?