@DragonParadox
Overall I've got to say I'm a bit unhappy how you handled sight and information in this arc.
The Wyrmwraiths are very stealthy creatures and they arrived at night, yet our defenders noticed them minutes away, when they should have been difficult to spot-check at 30 feet or so.
And now again, the greatest advantage of the underground-wraiths would have been surprise, but Mel simply knows that they are coming, without even the effort of casting a DIvination and risking the chance of failure or paying for a Commune.
You basically defanged most parts of this encounter by giving us an advantage in information that either D&D Spot/Hide mechanics, nor a common-sense adaption of ghosts in the darkness should have supported.
I never thought that this retaliation could beat the army we brought here, but I hoped there would be a serious price for provoking the Others on their very doorstep. Something like loosing one of the less experienced Moonchasers or so.
Instead they look roughly as competent as the average fiends we beat up for lunchmoney.