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At the beginning, I choose Enova (350 per day) or Ivora (specializing in Elves) – both are equally important! Next, I try to build an improved estate and a Castle as quickly as possible during the first week (if not on 200% difficulty). I clear the surrounding area of neutrals using Elves and "cannon fodder" – Centaurs. As a rule, I try to eliminate them all before they reach me (especially since the neutral monsters around the Castle are not very strong at the beginning). Then, I leave Dendroids in the Castle – I don't like running around the map with them. In general, the faster the creatures and the fewer of them, the farther and longer the hero can travel... But you need to know when to stop. So, for the defense of the Dendroids, in the hero's army, I have Great Elves, Gnomes, Unicorns, and Dragons (if I manage to build them). And of course, magic. I always try to learn everything. Elves are usually all intelligent. Or they quickly become intelligent.
I practically agree with everything; it's a correct tactic, but carrying Gnomes with you is practically the same as carrying Dendroids (speed 5 and 4). And if not with them, then at least 7 for Grand Elves. That's for later.