Themeborne: Escape the Dark Castle - Scourge of the Undead Queen ASM TBL012

Gorging on the castle’s unending supply of tortured souls, the Undead Queen calls to her service the corpses, skeletons, and spirits of the depths. If a prisoner should fall at the hands of her inexhaustible armies, all that awaits is an eternity of agonising undeath...

Along with fifteen new castle locations, and a new boss, this expansion for Escape the Dark Castle introduces an entirely new mechanic to the system.  Companions! Companions enter the quest via event cards and temporarily join-up with the prisoners to assist in their escape. Each Companion is a powerful ally, but their presence is often fleeting so players must choose carefully how and when to call on them.