NEON ABYSS
Whetstone
Whetstone increases melee damage as you use melee attacks in the current room. The source does not establish a permanent run-wide stack.
The Whetstone revision and Butterfly Blade weapon record establish a melee-compatible pairing, but not an exact stacking formula.
Effect
The trigger is using a melee attack, not a documented requirement to land a killing hit. Its scope is the current room. No per-swing percentage, maximum stack or guaranteed damage carryover to the next room is supplied.
Item Fields
| Field | Value |
|---|---|
| Trigger | Use melee attacks |
| Effect | Melee damage increases as attacks are used |
| Scope | Current room |
| Source reference | Fandom Items; Fandom Whetstone revision 5776; Fandom Butterfly Blade revision 7876; Fandom Upgrades |
Whetstone and Butterfly Blade
Butterfly Blade is a weapon whose attacks deal melee damage. That makes it relevant to Whetstone rather than an ordinary bullet-only comparison. However, the cited pages do not say whether each seeking butterfly adds a separate Whetstone stack; do not multiply stacks by projectile count. The historic Upgrades page lists Whetstone on tree page six for eight Faith Gems, but explicitly marks its data outdated.
Related Mechanics and Evidence
Whetstone affects room-scoped melee damage; Butterfly Blade deals melee damage. This supports a mechanic-compatible pairing, not a measured multiplier or a per-butterfly stacking rule.
This comparison is an editorial interpretation of the cited mechanics, not an official combo test. Unknown numerical values and unlock tasks remain unknown.
| Field | Value and scope |
|---|---|
| Related item / system | Butterfly Blade: Whetstone affects room-scoped melee damage; Butterfly Blade deals melee damage. This supports a mechanic-compatible pairing, not a measured multiplier or a per-butterfly stacking rule. |
| Source | Fandom Items (https://neonabyss.fandom.com/wiki/Items); Fandom Whetstone revision 5776 (https://neonabyss.fandom.com/wiki/Whetstone?oldid=5776); Fandom Butterfly Blade revision 7876 (https://neonabyss.fandom.com/wiki/Butterfly_Blade?oldid=7876); Fandom Upgrades (https://neonabyss.fandom.com/wiki/Upgrades); Fandom Skills revision 8091 (https://neonabyss.fandom.com/wiki/Skills?oldid=8091); Fandom Weapons (https://neonabyss.fandom.com/wiki/Weapons) |
Questions this page answers
What does Whetstone do?
Melee damage in the current room rises as you use the melee attack.
Does it last the whole run?
The published line says “while in this room.” I am not extending that to a permanent buff.
Keep going
Sources
- Fandom Items — B: Item table, wiki version 1.4.6, CC BY-NC-SA.
- Fandom Whetstone revision 5776 — B: Historical passive-item record; fetched 2026-10-14. Independently restated facts, not a reproduced article. Wiki rightsinfo: CC BY-NC-SA; independent mechanic facts, no commercial copying permission.
- Fandom Butterfly Blade revision 7876 — B: Historical wiki weapon record; fetched 2026-10-14. Independently restated facts, not a reproduced article. Wiki rightsinfo: CC BY-NC-SA; independent mechanic facts, no commercial copying permission.
- Fandom Upgrades — B: Neon Abyss wiki mechanic facts, checked through MediaWiki API on 2026-10-14. API rightsinfo lists CC BY-NC-SA; flavor prose is not reproduced.
- Fandom Skills revision 8091 — B: 1.4.6 source context; fetched 2026-10-14. Independently restated facts, not a reproduced article. Wiki rightsinfo: CC BY-NC-SA; independent mechanic facts, no commercial copying permission.
- Fandom Weapons — B: Neon Abyss wiki mechanic facts, checked through MediaWiki API on 2026-10-14. API rightsinfo lists CC BY-NC-SA; flavor prose is not reproduced.