Brainstorm

Brainstorm

Common1 version from Avatar: The Last Airbender Eternal · all sets

Cheapest version$2.70TCGplayer market price
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Avatar: The Last Airbender2025

Collector Booster 1 in 27 packsany version · 37% per box of 12
VersionPriceCollector Booster
Avatar: The Last Airbender Eternal · Foil #155 $2.701 in 27 packs37% per box

"Any version" adds up the chances of each version, so it is a close estimate.