For example, you could have 4 copies of Charizard and 4 copies of Dark Charizard in a deck (assuming the card was in Rotation), as Dark Charizard evolves from Dark Charmeleon instead of regular Charmeleon
Im a big fan of both cards
Pokmon has real potential for multiples (x3x10), but it is a speculative market with higher risk
The triple Black does make it harder to cast in Limited than you might think, especially on curve 5 mana reanimation spells normally don't fair well in Limited, they are usually in the D range, even with some extra value tacked on, but I think this one will overperform
The set also introduced some new mechanics, such as energy manipulation and the first use of only four energy types instead of previous sets, which used five or more different energy types
its simple, instantly recognizable, and universally playable