Bone Prison
PATCH 20261030.22026-11-01T03:04:00+09:00Bone walls cage the toughest monster near you for 2.5 seconds (act bosses half as long).
These are base learned-level effects, not final character-sheet damage. Account for equipment bonuses, synergies, modifiers and enemy resistances.
Effects by level
| Level | Effect | Cooldown |
|---|---|---|
| 1 | Bone walls cage the toughest monster near you for 2.5 seconds (act bosses half as long). | 8 s |
| 2 | Bone walls cage the toughest monster near you for 2.9 seconds (act bosses half as long). | 7.44 s |
| 3 | Bone walls cage the toughest monster near you for 3.2 seconds (act bosses half as long). | 6.92 s |
| 4 | Bone walls cage the 2 toughest monsters near you for 3.5 seconds (act bosses half as long). | 6.43 s |
| 5 | Bone walls cage the 2 toughest monsters near you for 3.9 seconds (act bosses half as long). | 5.98 s |
| 6 | Bone walls cage the 2 toughest monsters near you for 4.3 seconds (act bosses half as long). | 5.57 s |
| 7 | Bone walls cage the 3 toughest monsters near you for 4.6 seconds (act bosses half as long). | 5.18 s |
| 8 | Bone walls cage the 3 toughest monsters near you for 4.9 seconds (act bosses half as long). | 4.81 s |
Evolution requirements
Synergies and practical checks
- It cages the monsters with the most life near you that aren’t caged yet, elites and uniques too.
- A caged monster can’t walk, swing, shoot or cast, as Diablo II’s bone walls catch its missiles. A caged act boss can’t walk or swing, but still shoots and casts.
- It deals no damage, so gear’s +skills raise how many it cages and for how long.
Skill modifiers
- Pen —
- Crushing —
- Bulwark —
View in a class guide: Necromancer
Observed version history
| Patch | Observed at | Status |
|---|---|---|
| 20261101.1 | 2026-11-02T07:17:50.548Z | Verified |
| 20261030.2 | 2026-11-01T03:04:00+09:00 | Verified |