In fact, I wouldn't consider picking up power or any older cards worth more than $200 without a thorough knowledge on what to look for
As the game goes along, this can become an easily abuseable removal and advantage engine if it can be cycled through a graveyard
It can turn a larger artifact into a smaller one right away, or turn a smaller artifact into a more expensive one with a bit of a mana investment
While their main thing is to create multiple copies of the same custom deck (for weddings, corporate events, your own custom TCG, etc.), they make a great proxy Magic deck and consistently have the best price with the most options for card stock, finish, and packaging
Investment Guide Cubone, Pokdex #104, is a Ground-type Pokmon introduced in Generation I