The appearance of a master level mage is not something that the people know. Most would expect that mages at most can reach expert level as master level is regarded as myth. But no one would imagine that a member of royalty will one day reach master level.
We never told anyone that there are actually a lot of master level mages. People never know about that because we keep it as secret.
Because if we leak that secret and people learn that the cult has master level mages, then they will fall into despair. After all, the common sense of this world is that master level mages are the strongest. Probably, everyone is thinking that they are much stronger than even Angela who won the tournament.
By the way, the second tournament is already planned in a year or two. And after that, it will goes on annually at least. With each country has their own way of selecting the mages who will participate.