Adding more swords to this deck would be nice. The goal here is to get a small creature out with protection early. This should prevent people from attacking you. Then it's mana ramp to korona. If you have protection from korona let the other players do the damage for you. You should not be attacking anyone. Get a vow and swords on korona and you should be set.  If you board wipe before korona comes out or if she has protection from white at the time that should be enough to eliminate one player. Stay alive. Let others attack.