Clarota's helmet

Clarota's helmet is a helmet that was designed and enchanted by the mind flayer Clarota as a mental shielding device.

Appearance
The helmet is pieced together from various patches of metal, including iron. It is shaped like a skullcap and has a dull blue metallic glow.

Properties
While attuned to the helmet, the wearer has advantage on saving throws against being magically charmed, frightened, or put to sleep.

History
Clarota created the helmet to protect himself from being sensed and influenced by the elder brain and other illithid while they were under the control of K'Varn. After Clarota was killed for betraying and attacking Vox Machina, Vax'ildan grabbed the helmet and placed it on his own head.

Vax eventually had it identified by Sherri, who told him it guarded the wearer against magic spells that would affect the mind. When Vax later put on skull cap in Whitestone, he got the feeling that it would help him be less susceptible to charm effects.