This story, Once Upon a Time in Thiaras, appeared in Editorial Planeta's La Espada Salvaje de Conan (The Savage Sword of Conan) #15 (3rd era), and it's a Colossal 55 page Conan adventure (and as of today, loosely translated into English!). I believe it was originally published in Italy (by Marvel Italia), and it features a script by Italian writer Ade Capone, and superb interior artwork courtesy of Italian Alessandro Bocci...unfortunately, I think this is the only Conan comic Alessandro ever did, which is a damn shame…check out this Conan!
Umm...so Conan's alive at the end of the story...was that a spoiler?
Here's the cover, one of many beautiful creations by fellow Italian Alessandro Orlandelli, better known as Alex Horley!
Download via Mediafire, by Crom, or damn you to a thousand undead hells!