The most collectable ones are ones which are fan favourites, such as Charizard, Blastoise, Venusaur and Eevee
You want to be ahead when youre casting Risk Factor, but thats not a hard requirement for a red deck
Metropolis Reformer Metropolis Reformer is best played in lifegain decks considering it helps you gain life when its dealt damage
Does it present a fresh viewpoint in a landscape rife with imitation and vapid regurgitation
As long as you make sure your opponent cant respond to the sacrifice trigger, youre guaranteed to get your card and probably force your opponent into an awkward combat or using a good removal spell
Essentially, The Soul Stone is two excellent cards rolled into one, and that's why it's going to be a hard-to-find staple of black EDH decks