What is the history behind shadowless?

[thsigma]

Masters Guide for Pokemon WOTC Corrected Errors & Test cards

Masters Guide for Pokemon WOTC Corrected Errors & Test cards While talking with a good friend and local game store owner, he mentioned that there’s too much to keep up with when it comes to Pokemon errors, and that if there was a reference he could use to find out what errors exist and which ones to consider valuable, it would be very helpful. With so many new errors identified in the past five years, and no reliable source for error card info, I saw the need to compile a complete list of err…

This thread has most of them. Highly recommend bookmarking it. Bulbapedia also has a pretty extensive list of error cards.

https://bulbapedia.bulbagarden.net/wiki/Error_cards