And by forcing them to serve themselves, disturbing their peace.
In Erathia,
they deceived the heroes (The Shadow of Death), planned to conquer the continent,
sponsored Eoful and Nignon, then Vilmar committed treason
and killed Catherine's father.
In Heroes 4,
they made sacrifices to the god of death, who was going to return to Axeoth.
Baron Von Tarkin wanted to exterminate all of Chennnon.
Hexis almost caused Armageddon.
TES
Mannimarco became a god.