PHB
See Invisibility
2-level Divination
Casting Time: 1 action
Range/Area: Self
Components: V, S, M
Materials: a pinch of talc and a small sprinkling of powdered silver
Duration: 1 hour
For the duration, you see invisible creatures and objects as if they were visible, and you can see into the Ethereal Plane. Ethereal creatures and objects appear ghostly and translucent.