Unstoppable Cataclysm is a limited time premium card pack available on September 17, 2013 at 8:00 PM (PST). The pack featured three new Ultra Rare, and three new Rare cards. Two cards have Special Skills for Battle Royale XV.
Cards included[]
- Amaria of Holy Blue & Gold (17 PWR UR)
- Demonic Princess Monika (13 PWR UR) Special Skill Card
- Vile Commander Gustavus (13 PWR UR) Special Skill Card
- Black Harlequin Wayne (Rare)
- Primal Swordmage Ethelfleda (Rare)
- Dark Thunderwielder Theresia (Rare)