clear recipe card sleeves 5.5 x 8.5 Sleeve Protectors – Half Size Page work as ideal recipe protectors Simple Yet Functional 3x5 Card Sleeves - 2

Normally, these kinds of massive price spikes get triggered by newly discovered mechanical interactions after the launch of a new set

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For example, here are some of the earliest: Auriok Steelshaper was a generic 1/1 for 2 mana on its own, and if it was equipped, only Soldiers and Knights would get a bonus, and it was just +1/+1

The Pokemons black coloring makes it instantly recognizable, so its no wonder you can find it selling for nearly $5000 for graded copies

Some Spright Variant runs Kaiju-like cards as well in preparation to mirror matches

Katara, Waterbending Master - $18 to $35 There's some big price spikes in the eternal-legal set, which is pretty common for Jumpstart, as the desirable cards end up being pretty scarce