Dread Helm

From Xanathar's Guide to Everything, page 137; and The Wild Beyond the Witchlight, page 208.

Xanathar's Guide to Everything
Wondrous item, common

This fearsome steel helm makes your eyes glow red while you wear it.

The Wild Beyond the Witchlight
Wondrous item, common

This fearsome steel helm makes your eyes glow red and hides the rest of your face in shadow while you wear it.