The Lentic Helm of Lordship is a strange and grotesque object. Meant to be worn on the head, the Lentic Helm is a domed structure made of some manner of transparent gelatinous substance, rather like the flesh of a jellyfish, and held together by surface tension or some strange cohesion of molecules. The back of the "helm," such as it is, bears several clear, writhing tendrils; these are purely decorative, but tend to unnerve viewers and wearers alike.
The Lentic Helm allows the wearer to issue short commands (maybe five words or so) that must be obeyed, rather like the suggestion spell. Unlike suggestion, these commands can be harmful to the listener — "Strike yourself!" is just as acceptable as "Sleep!" or "Flee this place!"
Victims must make a saving throw vs. spells/magic/Will (with a +1 bonus for every victim beyond the first to be affected) or else carry out the instruction for one minute.
The origin of the Lentic Helm of Lordship is unknown, although Far Realm influence is suspected. Some scholars even think that the Lentic Helm might be the work of the aboleths — as much a tool of control as a trap for the unwary who dare use it. A few dark rumors even suggest that the thing is alive, and part of the aboleth lifecycle.