magnum opus

This is not the first question in Italian that you have asked here in the Main Forum, whose language is English.

If you want to ask a question in Italian, please use the Italian Forum, otherwise ask the question in English. Thank you.

About your question, Magnum Opus is probably the highest achievement possible, difficult to explain, I give you some links:

https://templeofzeus.org/Magnum_Opus.phpExternal ↗

https://ancient-forums.com/threads/levels-of-the-magnum-opus-clarified.289396/

https://ancient-forums.com/threads/magnum-opus-levels-explained.43683/