This Expansion was sold during the Flying Frog Production's Dicefest 2021 weekend.
It contained some maptiles, cards and the Master Samurai miniature.
The Map tiles are for inserting small passages to avoid overlaying of maptiles and there are also a new mine and a new blasted wastes room.
The cards are
P329 - Gear "Keg of Dynamite"
P338 - Mine Artifact "Masterclass Revolver"
P339 - Darkness "Infinite Darkness"
P497 - Gear "Rusty Shovel"
P914 - Mine Map "Grave Robber's Den"
P915 - Mine Encounter "Corpse Cart"
P916 - Blasted Wastes Map "Untouched Wreckage"
P917 - Blasted Wastes Encounter "Fresh Salvage"
Note: Flying Frog DiceFest 2021 Goody Box also contained two cards for Dark Gothic but this entry represents just all the Shadows Of Brimstone goodies.