This spell evokes ectoplasm from the eyes of a corpse, forming an ectoplasmic image of the last thing the corpse saw. The effect is visible for all present to see, including Sleepers.
The spell requires the presence of a corpse. While the eyes do not need to be intact, the spell does require a more substantial corpse than mere ashes, though a decapitated head will suffice.
Although mages often use this spell in the hopes of discovering the identity of an unknown killer (since the spell is limited to the last thing the victim saw before dying), if the victim was shot by a sniper from far away or poisoned, the spell will not reveal the identity of the killer.
An exceptional success might reveal an additional clue.
Guardians of the Veil Rote: Posthumous Accusation
The Guardians of the Veil are well known for using this rote in their inquiries. Even if the final image is not directly useful as a clue, it can provide clues indirectly. For instance, a killer might have, as mentioned above, thrown someone off a cliff. But if the body fell into a river and washed out to sea, the location of the death may lead the willworker to the scene of the crime, where other methods[1] might prove useful.
