A THREAD FOR NEWCOMERS!

In this regard, I have 2 questions.
1. How can I avoid losing half of any stack in a whirlpool?

The most typical approach is to separate a single unit (usually from the weakest ones) if there is a free stack. It will be lost in the end. Otherwise, only the artifact Captain's Hat (or the composite artifact Admiral's Hat, which includes the Captain's Hat) can help.

2. How can I tell when the opponent casts a spell on their unit (I liked the Berserk spell). When the opponent casts a spell on their unit, I hover the mouse over the unit with the right mouse button and only see the spell icon; when I want to hover the mouse over the icon, the window disappears. I don't remember all the spells yet.

Only by the appearance of the icon. It is not possible to enter the context hint window during combat... The set of spells for the computer is not that large – about a dozen and a half... So you will master it without any problems. As for "Berserk" – this is a trap for the computer, but there are no more such spells. Don't have any illusions. )))

Added 3 minutes ago

I'm seeing this for the first time. I checked: this is not a rumor set by the map author. But what are we talking about here?

Which game are you talking about? ))) The "Dragon Flight" spell is currently unknown. Maybe it's a vague allegory? )) This is still a translation from English, and translators, as a rule, are not fully aware of the details of the game itself, unfortunately... Perhaps, as an option, it refers to the "Fear" spell of the Azure Dragons?