@saroumana It deppends on enemy hero, and how far in game are you now. Evil book depends on hero intellect, in spells and hp/resistances etc so plan well your army/items before battle with high int enemy heroes. And if you think mid game is hard, wait for 42 int necromancer hero in death lands, or Baal with his demon portal (2x8 archdemons per turn).
Plant summoning was interesting to use before Matt limited it (check my post 116, on 12th page here
1 million dmg, could do double with blackthorn crown.
This mod is hard to play no loss, but no1 says it`s obligatory to play that way. But it very interesting to try all new combinations for units, with children bonuses. Have fun playing