Having Regigigas as an alternate damage dealer allows you to Knock out Pokemon like Charizard ex, Dragapult ex, and Terapagos ex, etc
Not only is the artwork great (Altaria and all), Lisias Appeal has a strong effect, working much like the ever popular Bosss Orders only with an added advantage of making your foes Pokemon confused
Turns progress the same as the normal Pokemon TCG, with the following changes: You may attack your opponent's active Pokemon on your first turn, even if you go first
Krarks Other Thumb (and associated dice mechanics) Coin flips have been a part of black-border Magic since the start, but somehow rolling dice never had the same level of legitimacy, and it was pigeonholed as an Un-set mechanic until very recently
Sometimes these articles are more about what I want to talk about rather than what I think will get the most clicks
I don't know any other cards that I should consider as overpowered, or they will be released in the next expansions