Energy is a great choice of mechanic for this deck, as Fallouts 1950s Americana nuclear power thematically aligns with the aethereal power that was first introduced in Kaladesh
Its themed specifically around Final Fantasy VII , and features plenty of familiar faces, from Cloud to Sephiroth, Aerith, Vincent Valentine, Barret, Cid, and beyond
This makes them an excellent choice for competitive play where card integrity is paramount
The fact that Arena cards/art will not be the same as the physical cards is a huge miss, very confusing, but I doubt that will affect the prices or play patterns much
And by this I mean that four toughness was a lot for a four mana flyer with an already game-breaking ability
A four mana, six loyalty walker in green is no easy thing to take down