Tactics for playing against Sylvan.

Nature has two periods in its development: before and after building the creature portal. It is better to try to kill them BEFORE. It will be worse later.
Therefore, if the opponent is playing as Nature and I have a chance to break through to him, I do it without hesitation.

I would think about the condition of my hero and his army before attacking. I like playing as Death against Nature; it seems more interesting to me. Magic is quite suitable against Nature. And the enemy building a portal... I'm not interested in that because he doesn't use it. (Champion difficulty level) When the portal is built, Hive-Oses appear. The AI doesn't hire them at all. And when I capture the enemy city, their number is quite decent. Personally, I prefer to hire Mantises from the portal. Divide the total number of Hive-Oses by six, and you will get the number of Mantises that I will hardly hire. In general, the Nature Castle is unique in its own way - it is the only place where you can hire all creatures belonging to this race. The only creature that is not available is the Gargantua because it appears with the Armageddon's Blade expansion. But I like playing against Nature, but I prefer to see my opponent as the Might race.