While this isn't the most expensive Pokemon card ever sold in auction, it is the most expensive 2017 Pokemon card sold now, as well as being unique in that, aside from Rotom, the card doesn't feature an actual Pokemon
Collector Booster Rarity Breakdown: 1 Traditional foil retro frame rare or mythic rare, traditional foil borderless rare or mythic rare, or a serialized card 1 Non-foil borderless rare or mythic rare 1 Non-foil retro frame rare or mythic rare 1 Traditional foil rare or mythic rare 1 Traditional foil retro frame common or uncommon 2 Non-foil retro frame commons and/or uncommons 1 Traditional foil land or artifact 3 Traditional foil uncommons 4 Traditional foil commons 1 Traditional foil double-faced token Related Products
Note that this doesnt count combat damage, so its a little narrow in that way
Monster Reincarnation Monster Reincarnation is a revival spell that was practically ignored for most of its life
This particular promo card has always seen high auction results, usually averaging between $200,000 to $250,000