The name pretty much sums it up, not really though, I'm confused now.

On May 22nd, the Chex Mixer's first Dota 2 tournament will start. If you have a team that would like to join, all are welcome to participate, but we will only be accepting the first 30 teams that apply. All teams must apply by May 10th so that tournament officials may create a list of match times and dates. If you want to register a team, please contact an admin stating the team's name, all of its members, team captian's first, and dates that you or your team will not be available. Other details, such as rules and registered teams, will be posted at a later date. Spread the word to your friends, we will be accepting teams from outside of the Steam group, and we look forward to seeing you all then!

-A message from the staff of The Chex Mixer