When I was on the VRGTR Discord server, I mentioned I had thoughts on the Shadowlands (as someone who, in collaboration with Ian Fordam, did an expansive detailing of the Cluster in QtR 31). A few folks there asked for my full review or thoughts on the 5.5e write-up and I provided. I figured I should also repost it here, since it would otherwise be confined to Discord and not available for viewing on a forum well-suited to that.
The Shadowlands from The Horrors Within
What I Like
The map is gorgeous! I love how it's made and I'm jealous that my hard work on Wonderdraft adding new locations and referencing older canon and netbook-canon ones is so ugly by comparison. Francesca Baerald really did an excellent job (assuming I'm right that it's her).
I love the expansion of the locations. The Borderlands and the potential of setting up a Bastion there is really cool and is a great way to anchor a party to the domain and have them care about what happens there. Proll and Wynderton remind me of locations my colleague Ian and I wrote about, so I'm glad that we were on a similar page as the designers. I like that they gave Banemaw a lair, as we did too, but we also have it as a fake lair since Banemaw isn't real in our version, and the ruins of Eckham and Ludyard are a good way to show Elena's willingness to put towns to the torch (but also in a way that makes some sort of logistical sense). I like Lake Amenta's new take and it references the connection to the Shadow Rift pleasantly.
I appreciate the explicit mention of the Shadowlands being about overt and covert evils. While I would characterize it more as human vs inhuman evils, I do like that they kept what the 3e designers were going for with the Cluster's overall thematic approach.
Love that they kept the strangeness of the Phantasmal Forest! The fluff and mechanical support for it is strong and exactly what I imagined.
Love the map for Shadowborn Manor. Idk how much it deviates from the original map from Bane of the Shadowborn (the 2e adventure) but it's great to have it as a map anyway. The maps really elevate this book for me.
I love the art for Ebonbane (and the art for this section, broadly speaking). It really pays homage to the influence of Stormbringer, the archetypal cursed sword of dark fantasy that inspired the likes of Ebonbane, Nepenthe, Frostmourne, and many more. I can hear a dark fantasy heavy metal album playing every time I look at the art, it's great. And the stuff here does enough to characterize Ebonbane for future DMs, enough that you don't have to read the novel Shadowborn.
I also enjoy that Ebonbane was made from the broken shards of Kateri's Holy Avenger. It's very similar to the idea of the "thrice-forged sword" that my colleague Ian and I came up with as a way to defeat Ebonbane for good. No issues with the stat block.
The Shadowlands Campaign Arc and the mini-adventure outline provided are good, they do their job well. I like the little reference to Lambert.
What I Dislike
Banemaw as a dracolich. I strongly believe that Banemaw shouldn't be real in order to better highlight Elena Faith-hold's human evil and made that a point in my own Shadowlands work, so it's expected that I don't like this.
I get why Morgoroth and Aurora get less focus compared to Elena and Ebonbane but I still miss him. We have such a lovely map of the Cluster with so much of Avonleigh being shown, and he's somewhat of a footnote. Same with the amount of references to Avonleigh's old map back in A Light in the Belfry---none of those sites that were referenced on this map are elaborated upon. It's a matter of page count and word count, to be sure, but I'm biased because in older lore, he was an interesting third party in the Elena/Ebonbane duality and my colleague and I tried to reflect that in our own Shadowlands write-up, but it's not unexpected. Just a bit disappointing.
No Belenus, just Ezra. I really don't like that. Belenus was a major part of the lore for Nidala in the past and having Elena Faith-hold being a zealot of Ezra really removes---to me at least---a major part of what made Nidala so unique. And what made Ezra unique to the Core and it gave more diversity to the faiths of Ravenloft as a setting.
What I'm Mixed On
I get why Ebonbane's backstory was changed and why there's no mention of Alexi Shadowborn. While I'm fine with and biased towards his original take, I also get that this is a more streamlined version of who he is and also doesn't get into the significant content-warning-territory of the original. Otherwise, I don't have a problem with his write-up and I like the reference to the Heretical Wars of older lore.
I've liked the concept of the Four Keys since older lore but I do wish there were more done with it. Much like the Tarokka cards giving Curse of Strahd significant replayability, I think the Keys can do the same for a Shadowlands campaign.
This is a minor point, but names. My colleague and I used Celtic names to reflect Belenus and the Celtic and Arthurian vibes of the domain (well really we used GonzoRon of the Fraternity of Shadows' names for settlements and they made that etymological choice and we're thankful to GonzoRon for sharing his campaign notes publicly and being a major inspiration and resource for our work), and this work goes in a more traditional Arthurian direction. There's nothing wrong with the names, this is me being nitpicky. I think Wynderton, Ludyard, Eckham, and Proll are fine, I'm just remarking on a difference in etymological choice by the designers compared to my own design choice.
Overall
I really am glad to see the Shadowlands in 5e, even if it's not exactly how I envisioned it. Despite my strong dislikes regarding Banemaw and Ezra, every other point is pretty minor or just a matter of page constraints. I'm overall really happy with what I see, and I know that the art, the maps, and the mechanical support provided in this book (even if it's just outlines and small stat-blocks) justifies my purchase and makes me happy to see more people using this really interesting domain. The overall themes and mood of the Cluster, while somewhat changed, are still really close to what they were. Enough that I'm satisfied and looking forward to seeing what others do with this domain.