Dreadmask of the Silent is a Nightmare Unique helm with no boss attached: it drops anywhere in Nightmare, most often from N6 up (rarer below that home difficulty, never above it), and nowhere else. Every copy is item level 100, and there 0.3% of what falls comes up Unique. It is built on Sovereign Dreadmask Helm — step 6 of the Dreadmask Helm line, item level 80 and up.

It always rolls the same numbers: +8% Critical Chance, +18% Critical Damage, +327 Maximum Health, +9% Critical Chance, +22% Critical Damage, +11% Critical Chance, +44% Critical Damage and +26% Attack Speed.

One Unique drop in 40 is a Mythical copy: the same item carrying 15–25% Mythical Energy that boosts every stat on it and can never be changed; the 15% floor is 10 times as common as the perfect 25%.

On top of that it carries Dreadmask of the Silent — +8 Critical Chance; Special damage +20%.

“No one heard the wearer coming. No one heard them leave.”