As in Pokmon and MTG, much of Lorcanas strategy unfolds well before the Illumineers face off
If setting up lots of mana to win isnt your thing, Kess, Dissident Mage can simply win you the game on the spot by having Intuition fetch up Thassas Oracle, Demonic Consultation, and Reanimate, and its hardly the only commander with access to these kinds of shenanigans
Sometimes price changes due to sheer popularity like the high price of The Lord of the Rings: Tales of Middle-earth set booster boxes, or like Kaladesh that have inventions see a faster rise in price since they have limited edition elements
The frequency by which a card gets played is pretty much the only universal statistic than can be applied to cards that do entirely different things in different decks
While it will probably be largely restricted to Fiendsmith-specific decks at the moment, its not difficult to see this getting a lot of play in decks of various ilks and archetypes