Thalia, Guardian of Thraben

Rare6 versions from Innistrad: Crimson Vow · all sets

Cheapest version$0.43TCGplayer market price

Innistrad: Crimson Vow2021

Draft Booster 1 in 69 packsany version · 41% per box of 36

Set Booster 1 in 43 packsany version · 50% per box of 30

Collector Booster Best odds1 in 10 packsany version · 73% per box of 12

VersionPriceDraft BoosterSet BoosterCollector Booster

Showcase #318 $0.431 in 218 packs15% per box1 in 130 packs21% per box1 in 59 packs19% per box

Regular #38 $0.441 in 109 packs28% per box1 in 74 packs34% per box— not in this booster

Foil #38 $0.701 in 2,220 packs1.6% per box1 in 745 packs3.9% per box1 in 74 packs15% per box

Showcase · Foil #318 $2.711 in 4,440 packs0.8% per box1 in 1,490 packs2.0% per box1 in 85 packs13% per box

Borderless #331 $0.68— not in this booster— not in this booster1 in 19 packs48% per box

Borderless · Foil #331 $0.77— not in this booster— not in this booster1 in 85 packs13% per box

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