Ring of the Octopus King
| "A mermaid who fancied to sing,|
Roused lust in the Octopus King.
There are eight of these, each with one of eight extra effects: Hunger-, Wiz, rN+, rF+, rC+, SustAb, MP+9, and Regen.
Obviously more desirable than their mundane counterparts, but many randart rings will be better, as the non-base properties on these rings are not all that great.