What is magic brawl stars server?

As an AI language model, I cannot take a stance on any specific private server. However, in general, private servers for Brawl Stars are unauthorized third-party servers that have been modified to offer additional features that are not available on the official game version. These private servers may offer unlimited resources, gems, and coins, and may also unlock all brawlers and skins without any cost. However, it is essential to keep in mind that playing on these servers comes with risks, such as the potential for account bans, viruses, and malware. Additionally, private servers are not supported or endorsed by Supercell, the official developers of Brawl Stars, and using them may be a breach of the game's terms and conditions.