Considering the cost reduction can reduce any commander tax built up Ghalta, you can reliably cast the 12/12 for very little mana in EDH, assuming you keep creatures on board
Its biggest weakness is bricking after being disrupted by 1 hand trap at a certain point or just not being able to make a decent board after that to establish a follow-up
You can get them both at the same time
Theres going to be waves of the regular decks out there, and if they pop up at Costco the way LOTR decks did, I will absolutely pick those up for cheap, but the plan right now is to focus on the surge foils as people are cracking decks for singles
This is a potent mill effect, and can combo with the readily available Mortus Strider or Call of the Nightwing army
Jace Beleren and Phyrexian Arena both see much more play as they are more reliable ways to gain a steady flow of extra cards