Over the last decade, there have been multiple on-going debates, to whether MTG alters are legal in DCI sanctioned events
Unfortunately, in Perfect Order's case, the exclusive Tyrunt promo card is far from the most desirable option you'll find, though the distinct artwork difference between standard ETBs and the Pokemon Center-exclusive version still makes these worth collecting
The quality of the commander is one of the reasons, such as synergy, and several other aspects
Kaladesh has energy creatures like Thriving Rhino and vehicles like Renegade Freighter
Cards like Backstab or Poison Dagger could potentially offer more consistent value in a similar role, but Wither could still see play in specific deck archetypes that aim to capitalize on the Frailty tokens it generates
While it's obviously still very affordable, that's a pretty sizable 415% spike, and it still seems to be rising