Heroes 5.5 WarGame Edition - Tactical Edition.

There was a similar idea before, but it has the following drawbacks: 1) against mages in PvP, this nerf will be of little relevance, as the main damage will be dealt by the opponent's hero. 2) consequently, the nerf of -1 defense (2 stats of the original) is too weak and should be -2 (4 stats of the original), which, on the other hand, makes the perk rather questionable against a melee unit, although it is useful at the start. There is a shortage of perks for attack, so there isn't much choice here. The Battle Battle branch is focused on damage, and both perks from it work in the same vein. I don't think it's worth worrying so much about the killed troops; in essence, only a few units of lower tiers will die. The percentages will be adjusted so that by the time of the PvP encounter, there will be about 10% losses in tiers 1-3 or 1-4.