Aeon's End War Eternal

The survivors of a long-ago invasion have taken refuge in the forgotten
underground city of Gravehold. There, the desperate remnants of society have
learned that the energy of the very breaches the beings use to attack them can be repurposed through various gems, transforming the malign energies within into
beneficial spells and weapons to aid their last line of defense: the breach mages.
Aeon’s End: War Eternal is a cooperative game that explores the deckbuilding genre with a number of innovative mechanisms, including a variable turn order
system that simulates the chaos of an attack, and deck management rules that require careful planning with every discarded card.