We have created this spot in our FAQs to help players find out which Planeswalkers are currently available in the Vault and when they'll be replaced.

Planeswalkers currently available in the Vault

The following Planeswalkers are available until August 24th:
    • Vivien on the Hunt  
    • Dungeon Master     
    • Ugin, the Spirit Dragon  
    • Basri Ket
    • Chandra Heart of Fire
    • Garruk, Unleashed
    • Liliana Waker of the Dead
    • Teferi, Master of Time
    • Saheeli Rai
    • Ajani, Unyielding
    • Dovin Grand Arbiter
    • Ajani Invigorate Leadership                 
Please visit back here often to get the latest information on the current available Planeswalkers. Given the increasing number of Planeswalkers and Card Sets in-game, we are starting to rotate Planeswalkers and Card Sets in and out of the Vault to put a larger focus on the newer sets and keep the game feeling fresh. But don’t worry, you’ll still be able to use any cards or Planeswalkers you currently have in your collection. You’ll also see all the older Planeswalkers and Card Sets returning to the Vault in the future, and you’ll be able to earn cards from older sets in-game.

Thanks for playing Magic: Puzzle Quest!