| Spell type | Indirect poison attack (red spell) |
| Requires | Path of Shadows 20+ |
| Enhanced by | House ShadowSworn counts as 5 ranks |
| Casting time | 5 seconds |
| Base modifiers | 100 feet range, +10 Ascendancy, +10 Power |
| Duration | 10 seconds, +2 seconds per rank (see below) |
Foul Rot is an indirect attack spell which targets the internals and inflicts poison damage. It only works against creatures with flesh, and on a critical hit the opponent’s flesh will rot, lasting for 10 seconds, +2 seconds per rank. This rot gives your opponent -5 Resistance, -1 Resistance per rank. If your opponent’s flesh is already rotting, then the duration will be renewed.