Deepfrost Signet is a Nightmare Unique ring, hunted from Frost Wyrm in the Mortal Arena, always at item level 120. It is one of four ordinary drops on its list — 22.5% of the Uniques that boss gives up, about 1 in 4 — and every kill rolls the list 5 times. It is built on Immaculate Deepfrost Band — step 6 of the Deepfrost Band line, item level 80 and up.

It always rolls the same numbers: +26 Power, +14% Frost Damage, +16% Chill Effect, +38% Frost Damage, +38% Chill Effect and +11% Power.

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 Deepfrost Signet — Your Main attack applies Chill.

It leans into Chill.

“Pulled from the glacier. The glacier wants it back.”