Umbreon Ex #176 (Pokemon Promo | Pokemon Cards) prices are based on the historic sales
[10] Main Phase 1 : The turn player may perform any of the following actions: [10] Normal or Tribute Summon a monster in face-up Attack Position (the monster is placed face-up on the field, oriented vertically), or Normal or Tribute Set a monster in face-down Defense Position (the monster is placed face-down on the field, oriented horizontally)
Bonny Pall, Clearcutter A busted Simic legend that produces an incredible amount of power, card advantage, and ramp
Artifact Color tag templates(None) Slagstone Refinery Whenever this artifact or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token
Yeah, this gets this spot purely on value alone
For larger collections, consider storage boxes with higher capacity