yugioh skull card PSA 10 - Yu-Gi-Oh - DPYG-EN002 - SUMMONED (super rare holo) *1st Edition* and can only be used in Speed Duels. Fossil Warrior Skull Bone -

Psyduck 175/165 Loading

Though it has a crew cost of three, it can distinctly be crewed by removing a loyalty counter from a Planeswalker under its owner's control

An invisible ink card is a special variant of the regular version, that basically looks the same, but is exclusively foil and has extra in-universe text from the investigative crew taking notes about the character

Its a contributing factor at best, not the primary catalyst for the current prices

However, newcomers might be overwhelmed by the game's presentation as in-game events and in-game product advertisements appear similar to each other

You can find these cards in both non-foil and traditional foil in Play Boosters and Collector Boosters