pokemon new booster box Japanese Wild Force Experience a premium collectible and gameplay boost with the Pokémon TCG – Mega Dream ex Booster Box (Japanese Pokemon Mega Evolution PItch Black

Some have had incredibly limited releases making them even harder to find

Sort Card Type Mega Meganium ex - 010/217 #10Double Rare $1.12 Mega Meganium ex - 034 #34Promo $0.70 Mega Meganium ex - 272/217 #272Special Illustration Rare $91.51 Meganium #9Holo Rare $31.83 Meganium #13Holo Rare $17.57 Meganium #26Rare $7.52 Meganium #27Rare $4.79 Meganium #3Holo Rare $2.20 Meganium #8Holo Rare $5.41 Meganium #10Rare $0.26 Meganium #5Rare $5.11 Meganium #3Rare $5.73 Meganium - 001 #1Promo $27.78 Meganium - 001 [Staff] #1Promo $102.12 Meganium - 010/132 #10Rare $5.55 Meganium - 26/123 (Cosmos Holo) #26Holo Rare $11.99 Meganium - 26/123 (Cracked Ice Holo) #26Holo Rare $7.75 Meganium - 3/122 (Cosmos Holo) #3Promo $5.84 Meganium (10) #10Holo Rare $65.67 Meganium (11) #11Holo Rare $104.16 Meganium (18) #18Holo Rare $180.01 Meganium (53) #53Rare $13.83 Meganium (54) #54Rare $12.53 Meganium (Delta Species) #4Holo Rare $65.78 Meganium (Prime) #109Ultra Rare $61.67 Meganium (Prime) - HGSS08 #HGSS8Promo $47.39 Meganium ex #106Ultra Rare $275.26 Meganium ex #106Ultra Rare $275.26 Meganium (18) #18Holo Rare $180.01 Meganium (11) #11Holo Rare $104.16 Meganium - 001 [Staff] #1Promo $102.12 Mega Meganium ex - 272/217 #272Special Illustration Rare $91.51 Meganium (Delta Species) #4Holo Rare $65.78 Meganium (10) #10Holo Rare $65.67 Meganium (Prime) #109Ultra Rare $61.67 Meganium (Prime) - HGSS08 #HGSS8Promo $47.39 Meganium #9Holo Rare $31.83

This doesn't seem to be a set focused on specific eras, but rather, a bunch of classic sets from the whole history of the game that are no longer available

The Gamma playtest even tracked league cards with a tiny unicorn stamp on the back

They aren't targeted, and they don't have to be lands that you control