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the best heroes are Tant and Galtran. Vidomina and Irka are used for gathering a skeleton army, but not for main battles (it's difficult at the start). Regarding the "rags" – the speed is 7, not 9, for upgraded units. They are used in rushes against mages; I gave them to a mage hero and, maneuvering them, cast a couple of spells (Meteor, Lightning, Chain) with heroes like Solmyr or Aislin. In a rush against Ciel, I used this tactic, then attacked with Tant. The opponent was furious. It's a shame I didn't record the battle; it would have made for a good video.