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Rampart is the strongest Castle after the Human Castle. It's strange that some people underestimate it. It's the most practical Castle. It's the easiest to play with on any map. As others have mentioned, it provides a percentage bonus to gold and resources each week. The hero's luck increases when defending the Castle, which is also significant. The hero selection is the best. Kirr, Ivorn, Roland, Mephala. There are also many good options for a secondary hero. If it's random, then at least one of them will appear! Yes, dragons are expensive, but they are good, both in terms of attack and defense. Unicorns provide blindness and magic resistance to the entire unit! (Someone said that it's nothing special). Dendroids terrify the opponent, but it's better to keep them in the Castle or use them for a second army. The main hero needs fast movement. Pegasi are fast and deal good damage, but they lack defense. Elves are very strong archers. With 14 Elves and 20 Centaurs, you can explore a regular map for 3 weeks. This is very convenient at the beginning of the game, and even better later on. Gnomes are a useless unit; let them sit in the Castle with their defense and resistance. Centaurs are very strong and fast.