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Yes, Haven is the simplest faction, and that’s why it’s designed to be easy for new players to understand in the game. But simple doesn’t mean easy ;) It’s just always easier to understand and get used to the fact that swordsmen are recruited in the barracks, cavalry in the stables, etc., than to explain to the player that manticores live in this cave, and pegasi in this waterfall. Later, the player will get used to it and figure it out, but at first, it’s easier to introduce them to the game with Haven.