NHF – new heroes for Heroes V 3.1.

I'm not against Sandro; I'm against mentioning Erathia and the fact that Sandro somehow moved around.
In Heroes 5, it was mentioned (though I don't remember which video) that Markel himself says, "My teacher is Sandro." It would simply be good to mention in his biography that Sandro was a great Necromancer, present at the very beginning of the Schism among Mages, possibly long before Erish became an Asylum for Necromancers. And then he disappeared. And then he returned.

By the way, I can dig up some names of dark elves and find a worthy replacement for the name Alamar (if the creator doesn't mind). The association is hard to kill. Alamar exists in Heroes 2 and 3. I don't remember about the fourth one.

Krag Hack is also mentioned in Heroes 5. Isabel says, "We need to hurry, as if Krag Hack himself is chasing us."

Added after 44 minutes
Out of curiosity, I looked through all the heroes in Heroes 6, but didn't see Sandro.
Although I haven't bought the expansions, maybe he's there?