Prepare for battle against an onslaught of alien invaders in Warzone Firefight with the new Mythic Warzone REQ Pack! Available for a limited time, each pack includes ten Mythic single-use power weapon REQs and one Ultra Rare or Legendary weapon or vehicle certification, if available. For use in all Warzone modes, including Warzone Firefight, this pack will ensure you enter battle with the most powerful gear available. *Limited number of Permanent, including customization, REQs available; if all have been unlocked, additional Single Use REQs will be included. Only customizations and boosts may be used in Arena mode. Broadband internet required (ISP fees apply); Halo 5: Guardians game and Xbox Live Gold membership (sold separately) required.