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
10 Lightning Energy: POP Series 2009 (League & Championship Promo) $7.96 Thundering Platinum Treasure What usually makes an Energy card special or unique is the ones that have holo patterns on them and this Pokemon Organized Play Promo from 2009 has a unique pattern that makes it stand out
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)
Mimikyu's value seems to hinge on the opposite: being incredibly terrifying and off-putting, but in an epic, menacing way akin to a villain from JoJo's Bizarre Adventure
Thanks to the glowing holofoil that covers the cards visual, Luminous Energy certainly lives up to its name