Holders of the Spellbook NFT can create a prophet NFT by summoning it. Holders of multiple prophet NFTs may also mint a new spellbook NFT by spending $NDT. Spellbook NFTs have multiple rarities, and the probability of a prophet NFT’s Class appearing varies depending on the rarity. White paper https://docs.nannda.xyz/nannda-white-paper/ About Creator Fees https://docs.nannda.xyz/nannda-white-paper/nft/buying-and-selling-nft