At what point is the mystery champ/skin/icon/ward revealed from Riot's point of view?
I ask because I would love to get Tahm Kench and I still haven't logged on to receive my free mystery champ. I would like to wait until TK is released before logging on. That would increase my odds of getting him from 0% to 10% (I currently only have 9 champs left).
So is the mystery champ/skin/icon/ward determined upon purchase or upon the player receiving it?
I'm fairly certain that the mystery gift is determined at the time it is bought and sent, not the time that it is opened by the receiving person, so even if you wait, you likely will still have a 0% chance of receiving Tahm Kench, but I'm not 100% sure.
Of course, for you, I don't think it matters. You see, for this whole Pool Party reward, you need to own at least 10 champions that are worth more than 520 RP in order to be eligible to receive a mystery champion, and since you only have 9 champs left, you are going to receive a mystery skin instead. So, even if you wait until Tahm is released, Riot will still have sent you a mystery skin and not a mystery champion.
