Game description from the publisher:
Bring your lieutenants to life with Lieutenant Packs for Descent: Journeys in the Dark (Second Edition)! Necromantic magic explodes out of the Shadow of Nerekhall expansion with the Tristayne Olliven Lieutenant Pack. This expansion includes a detailed figure and a personalized Plot deck that highlights Tristayne's chaotic energy. With his Plot deck, the overlord can also introduce Tristayne into other campaigns, using his dark powers to ruin the heroes. Both overlord and heroes gain new options with the threat and fortune tokens in this Lieutenant Pack.