pokemon card primeape - 057/165 - Pokemon 151 - Reverse Foil Evolves from Mankey Type The Most Valuable Primeape Pokemon

Is it a one-of in an equipment deck that can cheat both casting and equipping costs in older formats

That's to say nothing of utility artifacts and enchantments like Sensei's Divining Top, Scroll Rack, Sylvan Library, and Mirari's Wake

There were a total of 14 copies of the cards, and most of them were sold for thousands

Slap a couple of Powerful Energies on it to give it an attack boost and it can very easily take out most Pokemon with just one attack.

(2017-04-18) If another effect allows you to cast a split card with aftermath from a graveyard, you may cast either half

It even taxes activated abilities of white enchantments (check the Oracle text), which devastates cards like Meticulous Excavation