| Spell type | Indirect mental attack (red spell) |
| Requires | Path of Shadows 25+ |
| Enhanced by | House ShadowSworn counts as 5 ranks |
| Casting time | 3 seconds |
| Base modifiers | 25 feet range, +10 Ascendancy |
| Duration | 10 seconds, +1 second per rank (see below) |
| Enhanced mana cost | 50 mana doubles the duration and the penalties |
Tenebrous Chains is an indirect attack spell which targets your opponent’s legs and inflicts mental damage, although it only inflicts a single point of actual damage. If your spell is successful, dark chains will burst from the ground and coil around your opponent’s legs, reducing their movement rate by half your rank (rounded up) and giving them 1% chance per rank of teleportation failure.
Note that this spell doesn’t work on swarm creatures, for obvious reasons.