cosmic eclipse pokemon booster box POKÉMON TCG — HFX Games Of course Cosmic Eclipse Build & Battle

The Brilliant Stars trainer gallery card is a favorite, the Paldean Fates one is great too, and the GX from Unbroken Bonds is a classic that a lot of collectors have

It also has no retreat cost, meaning if things are getting hairy, Starmie can eject itself from the field without needing to get set back up with Energy

Pokmon: 13 3Ceruledge ex SVLS 6 4Charcadet SVLS 5 1Origin Forme Palkia VSTAR ASR 40 1Origin Forme Palkia V ASR 39 2Squawkabilly ex PAF 75 1Fezandipiti ex SFA 38 1Radiant Greninja ASR 46 Trainer: 29 4Carmine TWM 145 2Professor's Research PAF 87 1Boss's Orders PAL 172 1Briar SCR 132 4Ultra Ball PAF 91 3Nest Ball PAF 84 3Earthen Vessel PAR 163 3Night Stretcher SFA 61 2Pokmon Catcher SVI 187 1Pal Pad SVI 182 1Pokgear 3.0 SVI 186 1Buddy-Buddy Poffin TEF 144 1Perfect Mixer SVLS 14 2PokStop PGO 68 Energy: 18 12Fire Energy SVE 10 6Water Energy SVE 11 I love matching my decks with the same color of Sidewinder, and with Ceruledge ex / Origin Forme Palkia VSTAR, Ultimate Guard offers the perfect deck box

If you want to make this more balanced, I would suggest removing the ability to overlap any Rank 4 on its own, so that a "Rank-Up" Spell card is necessary.

A perfect example of this is the highly popular Phyrexian Arena