Cleon
Legend
That's all looking pretty good. Why the lower Dex, though? Both the standard unicorn and the almost-identical-statwise gray have Dex 17. If it was simply to lower the AC, I'd rather drop the NA by another notch than lower Dex.
I was thinking "narwhals are slow and ungainly but have real thick skin and blubber, so it should keep the NA and drop the Dex."
Upon reflection that wasn't so good an idea.

It give me visions of a sea unicorn in horse-form being a butterball!

So, I'll changed my vision of it to being a cross between a swordfish and a dolphin and restore it to standard Unicorn Dex.
Agreed to the higher CL for SLAs. I'm fine with either detect evil or detect chaos. They aren't particularly champions of law, so I can see where the greater threat of evil see creatures lends support to detect evil, though.
Yes, let's make it detect evil.
Should we give it magic circle as well? We could give it magic circle against chaos, just for variety.
And yes, the narwhal is apparently in bad need of an update! It's not in the Tome of Horrors, as I'd suspected, so it's fair game for an overhaul.
I've already got a (slightly exaggerated) homebrew of the narwhal, and practically every other type of Cetacean, but would be be happy to do a new take on the narwhal.
The SRD whales seriously needed fixing. The Cachalot is far too weedy, for a start.
