Good Night and Sleep Well
Good Night and Sleep Well is a 4★ Light Cone for the Path of Nihility in Honkai: Star Rail.
A farmable 4-star cone that stacks up to 36% DMG based on the number of debuffs on the enemy and applies to DoT, making it strong for debuff/DoT-focused teams though not a signature 5-star.
For every debuff the target enemy has, the DMG dealt by the wearer increases by 12%, stacking up to 3 time(s). This effect also applies to DoT.
The dim light outlines the dust tracks, As a young girl mumbles sweetly in her sleep. A silent figure appears behind her. "Well, well, well, you're cuter without those glasses — I knew it." The guitarist stares at her sleeping face, muttering to herself: "Good night, the genius girl that worries a lot."
How to read this Light Cone page
Every Light Cone has exactly one passive effect tied to the wielder's combat performance; that effect scales up as you Superimpose it from S1 to S5 — use the S1-S5 buttons above to see the exact numbers at each level instead of guessing or interpolating. A Light Cone only delivers its full value on a character who shares its Path; "Characters who use this cone" lists every character on that Path, while "Best users" is a narrower list pulled from real build consensus, not a guess.
Base stats (HP/ATK/DEF) are shown at Lv80 for every cone of the same rarity so they can be compared directly; a 5-star cone will always edge out 4-star and 3-star ones here — the real difference lives in the passive effect, not the flat stats. The "Alternative cones on the same Path" section suggests a few other options if you do not own the signature cone yet, or want to compare before spending ascension materials.
See the full list on the Light Cones page, or check terms in the HSR Glossary.