For one, their considerable bookkeeping and mental overhead is easier to manage especially compared to everyone needing to track their Undercity position in multiplayer
Its not all about flavour
At worst, newer players could stumble across it and believe that their Arlinn Kord is worth twice the retail, or that their Prized Amalgam is worth $5 the true market price
And they were more expensive two years ago than they were three years ago 2) Price trackers on sites like MTG Goldfish only measure sales, not listings, and they dont register in-person sales at Grand Prix, Pro Tours, etc
With a 1/3 body and mana value of three, it ETBs and then digs six cards into your library for a sweet instant, sorcery, or Dragon and then the rest head to the bottom of your deck
Narfi provides consistent tribal buffs and recursion as long as you commit to snow mana