The first Crimson Guardian pack is available and gives you access to the Crimson Vampire Bat. The pack also includes another Rare or better Guardian. The pack will run you 2,000 KI Gold or 10,000 Astral Gems. Like other packs won’t be around forever. So get it while the getting is good.
Check out more on the Crimson Guardians here: https://www.ultra-combo.com/crimson-guardians-available-shadow-lords/