Phyrexian Missionary and Nullpriest of Oblivion can come down on turn two for some lifelink action, or if you draw it later you can kick it for some extra benefit
These tend to be the most powerful cards that will be built into a deck in smaller numbers, if not just as a single card, with the intent of them being the backbone of any decks strategy
Finale of Devastation A premiere green creature tutor and one of best green sorceries in general, Finale of Devastation is also a wincon
Factors influencing their value include rarity, condition, and the Pokmons popularity
Will, Scion of Peace is a much more fair cost reducer in that you need to gain life, which already pats you on the back for extending the game
If you still have yours and want to sell it, youve missed the boat