See Invisibility

From Player's Handbook, page 274.

Description
2nd-level divination


 * Casting Time: 1 action
 * Range: Self
 * Components: V, S, M (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.

Learned By

 * Classes: Artificer, Bard, Sorcerer, Wizard
 * Subclasses: Cleric (Twilight Domain), Fighter (Eldritch Knight), Paladin (Oath of the Watchers), Rogue (Arcane Trickster), Sorcerer (Aberrant Mind)
 * Races: Mark of Detection Half-elf
 * Feats: Greater Dragonmark