How did they do this, you ask
Id expect to see Temporary Lockdown in controlling white sideboards as long as Hammer is popular
I am not sure how much the first three ones will be played because they surely bring many interesting things to the game but are not that powerful on their own to make a tier 1 deck, at least not right from the start
The exact premium varies widely depending on the card, the year, the print run, and how many PSA 10 copies exist
It plays smoothly, and if you arent running one in your black deck and if graveyards are biting, this is one of my recommended solutions
Sisters of Stone Death may be a very high-cost commander, but that doesn't mean you can't build a fun Commander deck around it