Sorry, can only comment in English, as I am not bilingual.
I really like the progression of this deck from version 1 to version 4. it shows your tuning method.
I don't really know what inputs other commentors had to influence your choices, although I do see some card names mentioned, that are not in your deck.
My only thought here, is that maybe 20 land is a tad low, and that is mostly because often
Ghost Quarter is hard to count as a land. That puts you at 18...... I thought you were better off when you had 22.
Any way, Nice Deck!