Note: Stones of the same type are numbered sequentially to reflect each period of availability. Only the most recent ones can be used to purchase the current round of cards from Baba's Treasures.
Older Stones become useless if not redeemed around the time when first available.
A God Stone is usually given free through the Gifts inbox for special celebrations. Another can usually be bought from Pilaf's Trove in a pack. However, during the 250m Downloads Celebration a 2nd god stone can be obtained through the 3rd set of Porunga's Wishes. Super Stones and Premium Super Stones can only be acquired by purchasing Dragon Stone bundles or packs from Pilaf's Trove.