# NFT * Hero Cards Use SWT to exchange for diamonds, and use diamonds to draw Hero Cards. Two identical Hero Cards can be combined to create a higher-star card. Hero Cards can be traded on the NFT marketplace or in the in-game marketplace. * Ship Cards Use SWT to exchange for diamonds, and use diamonds to draw blueprints. Use corresponding materials to craft ships. Ships can be upgraded using materials obtained from PvE and PvP battles. Materials can be traded on the NFT marketplace. * Equipment Cards Equipment cards cannot be directly drawn but can be crafted using materials obtained from PvE, PvP, and GvG battles. They can be traded on the NFT marketplace. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sailwars-1.gitbook.io/sailwars-whitepaper/game-elements/nft.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.