When Death Birds Fly(1980)
(The fifth book in the Cormac Mac Art series)
A novel by Andrew J Offutt and Keith Taylor
The name of Lucanor "Magus" strikes fear into the souls of all who sail the rough seas between Galicia and Britannia, for the spells of this mage and sorcerer are as evil as his heart--and he will rule these shores by whatever means he can. But he reckons without Cormac mac Art, he of the black hair and light eyes who has struck his own kind of fear throughout his native Eirrin and as far beyond as seafarers wander and tell tales of courage. Cormac is a warrior, more than a match for any other with sword or ax, but he is more than that. The blood of the High-kings of ancient days runs in his veins: the sorceries of such as Lucanor cannot overcome him though they come from the very bowels of Hell!
Used availability for Keith Taylor's When Death Birds Fly
March 1984 : USA Mass Market Paperback
November 1980 : USA Mass Market Paperback