Sentinels of the Multiverse : OMNITRON IV Environment Expansion Omnitron IV is a mini-expansion Environment Deck of 15 cards that adds a new place for the Heroes of Sentinels of the Multiverse to battle Villains in. NOTE: Requires the Sentinels of the Multiverse Core game to play. Many seeking power have attempted to harness the automatically generated troops and resources created by the fourth incarnation of Omnitron. Look for other Sentinels of the Multiverse expansions and play mat and enjoy the game. Each sold separately on Amazon. Heroes have faced more than one villain in the self-aware factory, each attempting to join forces with the robot, or even to subjugate its programming. If any were to succeed, the results would be disastrous...