You can vote
here for the participants in their race war thing - one team of each race, 3 players per team, though you can only vote for 1 of each. I'm going with
Classic
Flash
Rogue (obv Soulkey will win but I think Rogue should def be on this team)
With teams of Parting/Classic/CJHero vs. TY/Maru/Flash vs. Soulkey/Rogue/Roro...I think Protoss probably wins, with an outside chance of Terran surprising if recent balance changes turn out to have any effect. Rogue/Roro just aren't as solid for Zerg as #2/3 players compared to the other teams.