yes, my calculator (or my brain) is broken xD.
1234 the next and 24 past contest. With very very HIGH participation rate. The first just 1 participant, the second all verditii, and then all able. Maybe more than 300 items to choice. No list, must do it by feeling and investigate it. Maybe the runes can help him to choice. Maybe there is a list for the last competition. Maybe the list is stolen, lost. Maybe some of the artifacts are very important and are recognized. Maybe there are cursed artifacts as well.
But, no matter if list or not: a magus participate in JUST 1 category related to her rank, can not choice. And if you resolve they can choice they will never put assaid her honor and go in a contest with apprentices, they are proud artificers.
Tormenting master: No responsability to safeguard nothing: the fillii masterpiece belongs to him, but the autor is allways the apprentices. The filius can make some arrange with him to keep the masterpiece or make another with the lab text or magical memory. A criminal Tormenting master can bring the piece to a journeyman or master rank contest, according to her rank. In this case the filius may claim the autorship based on lab text and the sigil present in the powers of the item. The case i complicated if the master use the lab note to make another...
But this is a real shame, even for a tormenting master.
There are the other verditii are who vote for the winners, so a prize is times to times a matter of politics.
Maybe take the proof is more risky than accept the master winning and prepare a vendetta, or just start to earn power, vis and arcane conection for a wizard war. The Verditii dont want quaesitores in the contest. Maybe the filius can be bring the dispute to a tribunal... maybe if the master win the contest the filius can argue about deprivating of magical power: because winning the contest is winning artifact(s). Intellego Magic will said who is the creator of the artifact, or who is laying, and i can see at least one scenario in with can fail.
If the tormenting master has political power, so they will have enemies can help the filius, or use it and the claim in a vendetta.
I am sure as a tormenting master i never give the apprentices the rank of magus before the quaesitores put me over the edge, and i never will to stole the autorship of the masterpiece, but a specialy stupid tormenting master maybe can do it.
A lot to prepare for the contest: Verdi, Regio(s), the sourrounding, magi, custos, crafters, Cults. A lot of hooks, maybe vendetas, maybe a global plot, pollitical affairs... The contest is a serious thing.