Lanternfall is a Demon Unique relic with no boss attached: it drops anywhere in Nightmare, most often from N2 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 Eternal Winter Lantern Relic — step 6 of the Winter Lantern Relic line, item level 80 and up.

It always rolls the same numbers: +10% Ultimate Generation, +10% Frost Damage, +12% Frost Damage, +21% Ultimate Generation, +36% Chill Effect, +59% Ultimate Generation and +39% Frost Damage.

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 Lanternfall — Your Ultimate builds Chill on everything it strikes.

It fires Hoarfrost Eye on its own: Every 5th critical strike chills the target for 60% of the hit.

It leans into Chill.

Wearing it hands you Soul Torrent.

“The keeper hung a hundred lights. Winter kept them.”