I urgently need a map.

I apologize for creating a new topic. I really need a map, but I can't find it anywhere, and I don't remember the name. It's a multiplayer map, in the center of the map, seemingly on an island, with a strong Academy Castle, and you need to collect keys to get to it. The hero just sits in the castle with a huge army. That's all I remember. Please help me find it!