battle partners booster box pre order sv9 BOX} This box contains 30 booster packs Pokémon Battle Partners Japanese Booster

A foil Sliver Overlord is significantly more expensive than a non-foil Sliver Overlord

And the ones in black (and there are less than a dozen) tend to be 6-drops, the adventure side of Topaz Dragon notwithstanding

Pillar Analysis: Legendary Power (Combo Enabler), Scarcity (Reserved List), Perfect Condition (PSA 10)

So you're giving up more LP (unless it's really late-game and you somehow haven't died to a stray burn effect) for 350 more ATK and a probably not-very-significant amount of burn

8 25th Anniversary Celebrity Collaborator Cards are Unique Pokmon Cards with Star Power Copies: 3 Pokmon 25th Anniversary Celebrations Though the appeal of these cards may be very different from the rarest versions of the most iconic cards in major TCGs, there's no overestimating how rare they are