Watch the Call of Duty MW3 Season 3 BlackCell trailer! Call of Duty: Modern Warfare 3 and Warzone are ushering in Season 3 with an all-new BlackCell Battle Pass Upgrade for Season 3 to accompany the latest installment of the multiplayer first-person shooter developed by Sledgehammer Games. Season 3's BlackCell Battle Pass Upgrade comes packed with a new Stasis Operator, Fenrir BlackCell Variant, and the COD-father himself - Snoop Dogg as the Snoop Dawg BlackCell Variant.