Luckily, Dialga ex provides that much-needed Energy to keep it accelerating the Steel-type to victory
It would be worth the cost if the goal were to make Magic Arena the most realistic simulation of paper Magic possible, but with the goal being to make Arena the best new and intermediate player experience possible, changing to a chess clock would be a horrible move (although there should be some changes to the timer system, even with the goal of Arena in mind, with the biggest being that the timer should stop during animations that you can't play through)
Haunted One is the background that came packaged with Zellix in the Mind Flayarrrs precon, so theres some precedent for horror typal here
As such, while pull rate lists can sometimes be helpful, its also necessary to take them with a grain of (Shoal) salt because they are inexact and thus can sometimes be inaccurate
Winner all around
A: Japanese One Piece Card Game products are the original releases and typically launch 2-4 months before English versions