In Septimus Heap Physik how does Snorri see through Ullr's eyes?

Answer 1

She is a spirit seer, so she and her familiar, Ullr, are connected.

Answer 2

Snorri can see through Ullr's eyes by using her magical powers as a seer. Through a process known as "seeing stone sight," seers like Snorri can connect their visions with certain animals, like Ullr, to perceive events from a different perspective. This ability allows Snorri to gather information and make observations that she wouldn't otherwise be able to.