The utility of Hoopa EX primarily stems from the 1x Energy attack, which can OHKO Babies and also deal 20 DMG to 1 of your opponents Benched Pokmon
The key element is not the power and toughness boost, of course, but the fact that it allows you to skip your turn - a pretty damn rare effect
However, that was just reprinting six cards, and there are hundreds of new cards in the 40k commander decks - not to mention that the Astartes, Necron and Tyranid creature types are part of Games Workshop's intellectual property, so presumably can't be reused without their license.
Mega Punch also does 120 damage for three Energy, making it a decent Move despite not having any other effects
[19] However, if your entire pack is full of super rare cards, its probably fake
For full-arts that keep their borders, I like to tape right over the entire border, at least while Im getting the basecoat down