plant transmutation 

Traditions primal

Cast [>>] somatic, verbal

Range 120 feet; Area all squares in a 20-foot burst that contain plants or fungi

Duration 1 minute

Plants or fungi in the area entangle creatures. The area counts as difficult terrain. Each round that a creature starts its turn in the area, it must attempt a Reflex save. On a failure, it takes a –10-foot circumstance penalty to its Speeds until it leaves the area, and on a critical failure, it is also immobilized for 1 round. Creatures can attempt to Escape at entangle's DC to remove these effects.

Core Rulebook, page 336.