I am looking for maps for Heroes III.

Help me find a map-campaign (New Game - Campaign - Custom). The player starts in a dungeon with the main elven castle (Rampart). Nothing can be built. The starting hero is something like Mephala. She has 1 upgraded elven archer. You defeat 5 halberdiers. Then, 1 halberdier appears in her army. After that, you need to defeat something like 3 trees. In general, it's all very minimalist. I really liked the map, but I can't find it. It was there when I downloaded the game, but now I can't find it.