digimon cards 1999 first edition MetalEtmon Holo Card- All you need to get started I found these, are these

What are your thoughts on the whole thing

1 Tuner + 1 or more non-Tuner monsters Once per turn: You can reveal 3 Equip Spell Cards from your Deck, then your opponent randomly adds 1 of them to your hand, and you shuffle the rest back into your Deck

It is not about the ability of this card itself, but it is being talked about because an infinite turn combo can be established using the "Aeon counters" used to count the milling gimmick

The cheerful Blissey's introduction to the TCG proved valuable, as a PSA Gem Mint 10 first edition version of the holo card sold at an auction in 2023 for $12,000 (per Price Charting)