# Boss Rival This is a boss game mode to beat large boss monster with enormous health, attach damage, and armor. If you defeat the boss rival, you can earn the boss ruby. Players can exchange the boss ruby for legendary and elite hero shards and elite scrolls in trade market. Beat the boss and upgrade your army! --- # 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://meversedex.gitbook.io/pocketbattlesnftwar/pocket-battles/game-system/boss-rival.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.