---
key: mechanic/boss-fight-atlas--boss-ability-lock
type: mechanic
id: boss-fight-atlas--boss-ability-lock
lang: en
title: Ability or healing lock
summary: A named action becomes temporarily unavailable under an announced rule.
updatedAt: '2026-10-22'
status: active
url: >-
https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-ability-lock/
jsonUrl: >-
https://gamemechanics.pro/api/v1/knowledge/en/mechanic/boss-fight-atlas--boss-ability-lock.json
markdownUrl: >-
https://gamemechanics.pro/content/knowledge/en/mechanic/boss-fight-atlas--boss-ability-lock.md
aliases: []
tags:
- Boss fights
- 'States, resources, and scaling'
sourceIds:
- source-6aadf3e303741b4c
- source-e76f8435c4702dff
- source-0cf0e3b5c2a4e48d
- source-279d67df0f3819c9
- source-8dd968c389c76dd6
- source-c151324fe6097460
- source-060181fc6246dc4c
- source-9878991a933071b8
- source-62a0d706bf533ea6
- source-d58f69757a40ca80
sources:
- id: source-6aadf3e303741b4c
title: 'Boss Fight Atlas: Ability or healing lock (RU)'
url: 'https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/ability-lock/'
verifiedAt: null
- id: source-e76f8435c4702dff
title: 'Boss Fight Atlas: Ability or healing lock (EN)'
url: 'https://polyakovin.github.io/boss-fight-atlas/en/mechanics/ability-lock/'
verifiedAt: null
- id: source-0cf0e3b5c2a4e48d
title: Moon Lord · Terraria
url: 'https://www.youtube.com/watch?v=W5NUXcvW_G8&t=1s'
verifiedAt: null
- id: source-279d67df0f3819c9
title: 'Great Shinobi Owl · Sekiro: Shadows Die Twice'
url: 'https://www.youtube.com/watch?v=FPYv1C5OUEw&t=3s'
verifiedAt: null
- id: source-8dd968c389c76dd6
title: 'Groal the Great · Hollow Knight: Silksong'
url: 'https://www.youtube.com/watch?v=3MSBlnkdHJw&t=240s'
verifiedAt: null
- id: source-c151324fe6097460
title: 'Boss Up: Boss Battle Design'
url: 'https://media.gdcvault.com/gdc2018/presentations/Keren_Itay_BossUp.pdf'
verifiedAt: null
- id: source-060181fc6246dc4c
title: Moon Bite — Official Terraria Wiki
url: 'https://terraria.wiki.gg/wiki/Moon_Bite'
verifiedAt: null
- id: source-9878991a933071b8
title: Great Shinobi Owl strategy — GameWith
url: 'https://gamewith.net/sekiro/article/show/8639'
verifiedAt: null
- id: source-62a0d706bf533ea6
title: Silksong Bilewater and Groal maggots — PC Gamer
url: 'https://www.pcgamer.com/games/action/silksong-bilewater-groal-maggots/'
verifiedAt: null
- id: source-d58f69757a40ca80
title: Terraria
url: 'https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s'
verifiedAt: null
relations: []
placements:
- catalogId: boss-fight-atlas
id: boss-ability-lock
title: Boss fights
url: 'https://gamemechanics.pro/en/mechanics/boss-fight-atlas/#boss-ability-lock'
categoryIds:
- catalog-part-12
supersededBy: []
attributes:
preview:
updatedAt: '2026-10-22'
title: Ability or healing lock
description: A named action becomes temporarily unavailable under an announced rule.
image:
src: images/mechanics/boss-final-w5nuxcvw-g8-5.webp
width: 240
height: 426
crop:
x: 20
'y': 130
width: 200
height: 170
game: Terraria
sourceUrl: 'https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s'
originalUrl: 'https://www.youtube.com/watch?v=W5NUXcvW_G8'
sourceFrameSeconds: 5
credit: Re-Logic; gameplay capture by arnie
rights: >-
Game graphics © Re-Logic. Gameplay recording by arnie. Original visible
source markings retained. All rights reserved; excluded from portal MIT
and CC BY 4.0.
caption: 'Terraria: the Moon Bite icon in a Moon Lord explainer'
alt: 'Terraria: the Moon Bite icon in a Moon Lord explainer'
markers:
- x: 50
'y': 50
label: >-
Moon Bite temporarily blocks lifesteal rather than all forms of
healing
tips:
- >-
Name the blocked action, restriction duration and remaining alternatives
precisely.
examples:
- title: Terraria
url: 'https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s'
endsAt: null
provenance: >-
Editorial reference index based on the 124 public Boss Fight Atlas mechanic
pages checked on 2026-10-20. Original concise RU/EN definitions by
gamemechanics.pro; source categories, game/boss associations and reference
URLs retained from the atlas. Linked materials retain their original rights;
references are upstream attributions, not independent verification.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/boss-fight-atlas
---
# Ability or healing lock
id: boss-fight-atlas--boss-ability-lock
type: mechanic
key: mechanic/boss-fight-atlas--boss-ability-lock
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/boss-fight-atlas--boss-ability-lock/
A named action becomes temporarily unavailable under an announced rule.
## At a glance
[Terraria](https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s) · Game graphics © Re-Logic. Gameplay recording by arnie. Original visible source markings retained. All rights reserved; excluded from portal MIT and CC BY 4.0.
[Source recording](https://www.youtube.com/watch?v=W5NUXcvW_G8), 5 s
1. Moon Bite temporarily blocks lifesteal rather than all forms of healing
- Name the blocked action, restriction duration and remaining alternatives precisely.
- [Terraria](https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s)
## How it works
A named action becomes temporarily unavailable under an announced rule.
## Variants
### How the technique works
- A named action becomes temporarily unavailable under an announced rule.
## Context and limits
A concise reference to all 124 Boss Fight Atlas mechanics across its 14 source sections. Each entry includes a definition, full RU/EN lesson links, game references and further reading retained from the source. Animations and detailed rules remain in the atlas.
## Connected materials
## Sources and provenance
Editorial reference index based on the 124 public Boss Fight Atlas mechanic pages checked on 2026-10-20. Original concise RU/EN definitions by gamemechanics.pro; source categories, game/boss associations and reference URLs retained from the atlas. Linked materials retain their original rights; references are upstream attributions, not independent verification.
- [Boss Fight Atlas: Ability or healing lock (RU)](https://polyakovin.github.io/boss-fight-atlas/ru/mechanics/ability-lock/) (id: source-6aadf3e303741b4c)
- [Boss Fight Atlas: Ability or healing lock (EN)](https://polyakovin.github.io/boss-fight-atlas/en/mechanics/ability-lock/) (id: source-e76f8435c4702dff)
- [Moon Lord · Terraria](https://www.youtube.com/watch?v=W5NUXcvW_G8&t=1s) (id: source-0cf0e3b5c2a4e48d)
- [Great Shinobi Owl · Sekiro: Shadows Die Twice](https://www.youtube.com/watch?v=FPYv1C5OUEw&t=3s) (id: source-279d67df0f3819c9)
- [Groal the Great · Hollow Knight: Silksong](https://www.youtube.com/watch?v=3MSBlnkdHJw&t=240s) (id: source-8dd968c389c76dd6)
- [Boss Up: Boss Battle Design](https://media.gdcvault.com/gdc2018/presentations/Keren_Itay_BossUp.pdf) (id: source-c151324fe6097460)
- [Moon Bite — Official Terraria Wiki](https://terraria.wiki.gg/wiki/Moon_Bite) (id: source-060181fc6246dc4c)
- [Great Shinobi Owl strategy — GameWith](https://gamewith.net/sekiro/article/show/8639) (id: source-9878991a933071b8)
- [Silksong Bilewater and Groal maggots — PC Gamer](https://www.pcgamer.com/games/action/silksong-bilewater-groal-maggots/) (id: source-62a0d706bf533ea6)
- [Terraria](https://www.youtube.com/watch?v=W5NUXcvW_G8&t=5s) (id: source-d58f69757a40ca80)
CC-BY-4.0 · gamemechanics.pro contributors