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It will be a best of 3, so you can bring from 1 to 3 teams (this is also my first, I imagine you come from freezai as well). So thursday it is, good luck and until there.
Sorry for bothering, but I haven't seen my name in the activity tab on Lc open round 1-b you posted even thought I have posted the won gg post already. Don't know if I'm mistaken somehow, its my first tournament on the site.