- Published: 1978
- Hugo Award for Best Novel, 1979 —
- Nebula Award for Best Novel, 1979 —
- Locus Award for Best Novel, 1979 —
The mri race, indestructible until having finally met their match in a war against a new and powerful enemy, are in danger of extinction, leaving three individuals--a warrior, priestess, and human being--to recapture their domination.