Up to 1 minute
While maintaining concentration, you can use your action every turn to conjure a fey spirit in the shape of a black bear. These bears take their action immediately after your turn and all of them concentrate their efforts, targeting only a single creature at a time. Only four bears may be active at a time.
If you cast this using a 8th level spell slot or higher, you instead summon Polar Bears.
bear dung and hair
Invito Ursus Spiritus