Worldspine Wurm

Mythic1 version from The List · all sets

Cheapest version$6.40TCGplayer market price

Murders at Karlov Manor2024

Play Booster 1 in 640 packsany version · 5.5% per box of 36

VersionPricePlay Booster

The List #RTR-140 $6.401 in 640 packs5.5% per box

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