Enspelled Staff - 'Remember Your Roots'

This quarterstaff was made in the town of Fiinweg for Ori's journey. Welded into a mold from a braided root of a tree with metal, with Gnomish carvings throughout.

Bound into this quarterstaff is a spell of Entangle.  The staff has 6 charges and regains 1d6 expended charges daily at dawn. While holding the quarterstaff, you can expend 1 charge to cast its spell. If you expend the staff ’s last charge, roll 1d20. On a 1, the staff loses its properties and becomes a non-magical quarterstaff.

The uncommon level of the spell bound into the staff determines the spell’s saving throw DC 13 and attack bonus +5. 

Entangle:  Grasping plants sprout from the ground in a 20-foot square w/i range. For the duration, these plants turn the ground in the area into Difficult Terrain. They disappear when the spell ends.

Each creature (other than caster) in the area must succeed on a STR ST or have the Restrained condition until the spell ends. A Restrained creature can take an action to make a STR (Athletics) check against save DC 13. On a success, it frees itself from the grasping plants and is no longer Restrained by them.