# Tiers & Classes Once a card’s four features are randomly generated, the NFT's overall rarity will fall into one of 10 possible rarity tiers. An NFT’s tier is determined by the combined rarity of its features. For example, an NFT with several common features will end up in a Basic tier, while NFT’s with higher rarity features may be a Silver, Gold, or Diamond tier. Silver cards have a silver border, golds have a gold border, and so forth. This creates an easy way to see how rare or valuable a card may be at first glance. The probability of receiving a certain tier is illustrated below. ![](https://lh5.googleusercontent.com/fWJ7EqcdiT-t201PHmE1ntg5SSYk0FtT9g5MU8eDyFjHw3B5FjgF3JFx5zQc6gHJaXOVKlwxln7el5TB27xyhVM68CB45vnjaZtj2En8FVUSboau0ekgzYZztnnOzAP-QSlvROwa) --- # 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://docs.nemus.earth/nemus-docs/nemus-litepaper/the-nemus-nft/tiers-and-classes.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.