First off, 'Blood of Cuchulainn' isn't a gentle introduction to Celtic lore; it dives straight into the muddy, bloody trenches of it. A lot of modern takes romanticize the Morrigan as a spooky crow goddess or Cuchulainn as a tragic hero, but this book scrapes off the varnish. It presents the Morrigan's favor less as a blessing and more like a curse that warps the protagonist's sense of self, which feels closer to the capricious, often cruel nature of those old stories. The geasa, those magical taboos, aren't just plot devices—they're psychological traps that tighten as the story goes on, mirroring the inescapable fates of the original myths.
What really stuck with me was how the author weaves in the concept of the 'fith-fath,' the veil of invisibility or shapeshifting. It's not used for convenient stealth missions. Instead, it becomes a metaphor for the protagonist losing their own face, their humanity, under the weight of a borrowed, ancient power. The exploration feels less like a history lesson and more like an archaeological dig into the darker, weirder substrata of those legends. The ending, without giving too much away, leans hard into the cycle of violence and rebirth, leaving you with a feeling that's more uneasy than triumphant, which I think is pretty authentic to the source material's spirit.