Another 3 last wish runs without any 1kv drop...
According to my observations there are some personal limitations in the drop table for some item on the entire the account with extremely low percent of getting it, but when you get it at last this chance increases dramatically.
Le Monarque is a great example.
English
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1k voices is in two chests at the end with all of the boxes you just have to get lucky and open one of two boxes containing the 1k