phantasmal flames booster box - me02: phantasmal flames Bundle Pokémon of all types are putting everything on the line to become Mega Evolution Pokémon ex Pokémon TCG Mega Evolution Phantasmal

You will end up exiling something to Ecstatic Beauty that, on average, you dont regret, but sometimes you have huge regrets when its not the right time or in the right order to make an excellent play

[/spoiler] [spoiler=Prinsychic Holy Guardian] 2 level 12 Warrior-Type "Prinsychic" monsters Once per turn during either players turn, when this card would be destroyed by battle or card effect you can detach 1 Xyz Material from this card to negate the destruction

Destroy that target

And some Japanese booster boxes from the PCG era are also almost non-existent, as mentioned by @fourthstartcg in this quote: Where all the Flight of Legends at

GR Gold Rare Vulcan Dragni the Cubic King X FIRE Level 3 [ FairyEffect ] ATK 0 DEF 0 Cannot be Normal Summoned/Set

The rarest item in the show was probably a sealed Pokemon first edition base set, which contained 36 unopened packs of the trading card game's original set first released in 1999