It was already rising before everyone started talking about Premodern, and the new attention just accelerated that trend
Another benefit would be characters that directly benefit from being at a location, such as this new Minnie Mouse: There are no limits to the amount of characters that can be at a specific location, just as long as you pay the cost to move each of those characters to that specific location
A 5/5 Human Knight with vigilance and menace for six mana, whenever an equipped creature under your control attacks, you can draw a card for the low cost of losing one life, potentially allowing several additional cards to be drawn in a single turn
Yawgmoth's Will Last but certainly not least, The long undisputed king of graveyard recursion and deadly storm turns (until Underworld Breach, that is), Yawgmoths Wills price decline has been compounded by both a downturn in the overall market as well as a downtick in the number of lists playing it