NHF – new heroes for Heroes V 3.1.

There are too many loops overall. Many of them can be combined.
And doesn't Fagus have the default font for flying messages?
Does Avrana's special ability work or not?

It is desirable to combine the loops. At least those that have significant delays. It is strictly not recommended to combine minor ones, as the increased delay will break the script. For example, for the event: you pulled out an army and put it back in. The interface lock will be severe, so it should be abandoned.
Fagus now has the default font, so it needs to be reduced.
Avrana's special ability sometimes worked, sometimes it didn't. I can't check it right now.

Added 42 minutes later
You can take into account the triggers for hiring, visiting dungeons, and launch a cycle of a specific hero from them. Or, in one cycle, check if all the heroes who need scripted special abilities are alive, and if they are alive, only then launch the hero's special ability script in another thread, etc.

Added 1 hour 12 minutes later
The load needs to be checked on a huge map with a large number of players and a time limit.

Added 3 minutes later
RedHeavenHero, Your Avrana script gives an error on the second day: it cannot find Avrana ;)