A skull set upon a staff, these macabre artifacts cause magical shards in the area to glow with magical radiance when a viewer looks through the eyes of the skull.
Alexius was quite clear in his orders. We must scour the countryside to find more of the shards. Without them, the Venatori cannot claim the treasure our master seeks. For that, we need the oculara. Without them, the shards are nearly impossible to find, even if they are no longer cloaked by whatever magic hid them for all these centuries.
There must be more Tranquil in the area — the rebels abandoned most of them when they fled their Circles. Remember, the skull will only attune properly if the Tranquil is in close proximity to one of the shards when the demon is forced to possess him. Even then, the blow must be delivered immediately. The oculara produced from Tranquil killed even minutes later failed to illuminate the shards when used.
I trust you to continue your efforts in this matter. Our master expects success.
—A letter found in an abandoned house in Redcliffe Village