Thanks to the glowing holofoil that covers the cards visual, Luminous Energy certainly lives up to its name
Being able to nuke any artifact or enchantment whenever a creature you control enters is a massive gain, especially if you're playing any number of notable commanders who enjoy tons of tokens entering the battlefield, like Jetmir, Nexus of Revels (one of the best Cat cards for Commander)
While your opponents are setting up their mana, you're playing cheap and aggressive creatures
The two Prism Star cards from this set I like most can certainly be used together in a deck, just make sure to use Solgaleo first, then Cyrus, otherwise, Solgaleo won't be able to add many Energy to your Pokemon if your opponent doesn't have many Pokemon in play
User Experience The search and filtering are excellent for raw cards
However, at some point the poor guy got turned into a werewolf, and when night falls he becomes Howlpack Alpha