You gain the ability to summon a spirit that assumes an animal form: as an action, you can expend a use of your Wild Shape feature to cast the find familiar spell, without material components.

When you cast the spell in this way, the familiar is a fey instead of a beast, and the familiar disappears after a number of hours equal to half your druid level.

This is a 2nd-level optional class feature for the Druid, added in Tasha's Cauldron of Everything (TCoE 35).