Oakstaff

You transform a simple wooden weapon into a weapon of living wood. The weapon becomes magical, gains a +1 bonus to attack and damage rolls, and you may channel nature-themed spells through the weapon; it counts as a magical implement. The weapon sprouts small leaves and feels warm to the touch.

At 5th level, on a Nat 20 attack with the weapon, the target is entangled until the end of its next turn (DEX Quick save negates). At 9th level, the weapon can cast Mend Wound once per day without expending one of your daily spells. On a hit, the target is entangled until the end of its next turn unless it succeeds on a DEX Quick save.

The weapon returns to normal when the spell ends. Only wooden weapons, twig or branch can be affected by this spell.