In a format where resource management is critical, this effect was completely game-breaking
The Mewtwo EX card can give you a quick way to generate high damage in Pokmon TCG Pocket battles
Dont forget that post-WOTC Pokemon suffered the same fate in this era where very people continued collecting into the EX era, and when Pokemon came back into the big time, it was mostly the WOTC era that boomed
Many of these pieces were made available as merchandise in the museums gift shop, including Pikachu With Grey Felt Hat, which is inspired by Self-Portrait with Grey Felt Hat
The best operators put the essentials up front, including a clearly labeled wagering total, a list of eligible games, and a help link for clarification
This makes selling these sets a little difficult if you have a "keep them all united" mindset