Barbs
Barbs is a status effect which causes the victim to sustain damage each time it attempts to move. The barbs remain in their target for 3-6 turns plus an additional 2-4 turns each time the target is struck by more barbs, up to a maximum of 12 turns. This duration decreases when the target remains in place (use the s or . keys). Moving while under the barbs' effect deals 2d(4+number of barbs) damage (up to a maximum of 2d6). This has a 33% chance of decreasing the duration by one turn; it is possible to rid yourself of barbs by moving, but doing so will incur significant damage.
The Barbs status effect is inflicted whenever a target is hit by the Throw Barbs spell, which the following enemies can cast:
H Manticore
9 Peacekeeper
History
Barbs was added in 0.14.