Necron Dynasties is one of four preconstructed Commander decks from Magic: The Gathering's "Universes Beyond" crossover with Warhammer 40,000, along with Forces of the Imperium, Tyranid Swarm, and The Ruinous Powers. Each of the decks ties into one of the factions from the Warhammer 40,000 universe and is available in both a standard and a collector's edition; Necron Dynasties is a black deck based on the Necrons and led by Szarekh, The Silent King and Imotekh, The Stormlord.
The deck contains 100 cards, 1 foil-etched display commander, 10 double-sided tokens, 1 life tracker, and 1 deck box. The contents of the Collector's Edition are the same, except that all cards (including the tokens and the display commander) have a unique premium "Surge Foil" treatment.