Magic: The Gathering March of The Machine Commander Deck Call for Backup (100 Card Deck, 10 Planechase Cards, Collector Booster Sample Pack + Accessories) : Toys & Games Amazon.com Magic The Gathering Call For Backup Commander Deck ONLY NEW sealed MTG March Of The Machines Commander Deck Call For Backup 10 cards to Upgrade the Jeskai Striker Precon Commander Deck. Let's address the elephant in the room straight away, I have opted for the backup commander, Elsha, Threefold Master. After playing the Unstable Mutation: Call for Backup Goonhammer Here are the two backup commanders for the Lorwyn Eclipsed precons! Mass of Mysteries might be a fun build around. And the Reaper King is back! Commander precons are being revealed here: