Lin Carter 
Thongor Fights the Pirates of Tarakus 

The Gray Death: It struck the proudest ship of Patanga’s fleet, and left its picked crew dead or howling in their madness. And swift on the heels of this horror came news that a renegade wizard and a pirate king were moving against Patanga, armed with mastery of the invincible Gray Death! Patanga’s warrior-king, Thongor the mighty, set out on a desperate mission to counter the deadly sorcery that doomed his realm – and vanished from the sight of men!