[As the Nighthaunt Taketh: A beginner's guide]

Quote

Unfortunately, since Nimbus of Power and No Rest for the Wicked take place during the hero phase, and not the start of it, models returned with those abilities won't benefit from the buff.

What do you mean by that?

Also, unlike the self-healing, returning models with Nimbus of Power happens at the start of the hero phase oddly enough

[The Emerald Host - Welcome to the Danger Zone]

I think Melkor the Traitor Knight is as much a named hero as Crawlocke the Jailor and Liekoron the Executioner 😉

The Dreadblades aren't actually half bad when close to the KoS for the reroll 1 for wounds and both having an artefact. Give one Balefire Blade for +1 damage and let the other one hit and wound on 2+ and they deal exactly as much damage as 10 Reapers with full rerolls. Meanwhile they don't degrade when taking a little damage and are considerably stronger against heros and monsters where Reapers wouldn't get the rerolls. Allthewhile giving extra Deathless saves. In this specific configuration I don't see them as a tax at all.