Given the price history of white Commander staples (see: Archaeomancers Map, Smugglers Share, Smothering Tithe, etc.), I think Archivist will hit a minimum of $30
Let's look at what Steel cards are performing the best after Fortisphere left the format
As examples, the rarest non-serialized drops have been the Lost Legends rares (Roughly 46,700 packs for a specific Legends rare out of DMU), the first set of Surge Foil Realms and Relics (~3,900 packs),and the Jurassic Park Emblem Foils (3,800)
The tie this time is that each of the cards has art that ties it to a fairy tale, but previously it was things such as retro artifacts for The Brothers War (an artifact centric set which took place in the past) and Strixhaven s Mystical Archive (a fictional stash of powerful spells kept in a restricted area of Archavios)
Brutal burns and all that jazz