Teams cannot trade their purchases with other teams, but have the right to "discard" their purchase (aka not use it in your expression). Note that you MUST alternate symbols and signs in your expression (i.e. you cannot say "1" "2" "-" "2" since that would be saying 12-2).
The first team to give me their expression that makes 10 using their lots will win a pyramid piece and the right to choose a team to not play in the next Temple Mission. The LAST team to give me an expression will AUTOMATICALLY go to the ToF.
However, there's more in play....
1) If a team is not here, they are still eligible to participate. Though for each round, one cube will be removed, starting from highest (10) to lowest (1). If I remove all the numbers because they're not here, that team will AUTOMATICALLY go the ToF. I wouldn't call this unfair, because I'm telling you in advance. Everyone seems to agree on 7PM EST through the application, so.....
2) If you are out of cubes in the auction and have not made the number 10, you will AUTOMATICALLY go to the ToF. The last team to give me their expression still applies, so we may have more than 2 teams go to the ToF. (i.e. 2 teams are out of cubes and the last team to give me an expression). So in reality, ALL of the teams may go to the temple.
3) If, by the end of the 24 lots are over and we're still playing, the Chatzy gods will determine the next number AND symbol for each round.
4) If you're going to the ToF, the only chance for you to get out of the mess is to win tomorrow's temple mission. If you get the samadhi and you're going to the ToF by any of the above, then you're definitely going to the ToF no matter what.
5) PEMDAS rules apply in this mission.