Whenever Nick Valentine or another artifact creature you control dies, you may investigate
That card is also not a once-per-turn, meaning you can abuse it to make a board that should be feared
The instant speed and plethora of options cater to your needs
So it seems to be as I thought: a "mash up" of excess cards from Japan, including recent deck promos (Ninetales-EX, Vaporeon-EX, Jolteon-EX, etc.), the Pokekyun Collection mini-set (the "second Radiant Collection"), and most likely the Premium Champion set (the Articuno full art reprint from Roaring Skies , the Basic Energy)
1 Trainer Trophy Pikachu, to be the second rarest Pokmon cards
Ever since I saw the Christopher Rush Mewtwo as a kid, Ive been fascinated by the idea of crossovers in the two franchises