Any two Creatures with Undying will go infinite, like Butcher Ghoul and Hancock, Ghoulish Mayor, as the +1/+1 and -1/-1 counters cancel each other out each time and you sacrifice those two Creatures infinitely as long as you have a way to gain life
Any creature deck would be happy to run this, even without counter synergies
PSA 10 means perfect corners, perfect centering, no print defects, no scratches on the surface
Krotiq Nestguard Do I like 4/4 defenders where you have to invest a bunch of mana to turn them on
BPhillipYork: Well double proliferate is a thing, this seems like it would be right at home in bog standard old-school Atraxa decks
It's fanatical stuff, but when it comes to the most expensive rare Pokmon cards on the planet, this is the level of perfection buyers look for