Brambler
Weapon (net), rare
This uprooted plant sports a wild tangle of thorny brambles that lash out when touched. It can be wielded as a net with these alterations:
If you spend 1 minute burying the tuber in soil, the brambler’s thorny vines will create a snare along the ground within a 5 foot radius. This trap is nearly impossible to distinguish from an inanimate plant, requiring a successful DC 20 Intelligence (Investigation) or Intelligence (Nature) check to discern its true nature. If a Large or smaller creature steps into this area, it must make a DC 15 Dexterity saving throw or be ensnared by the brambler as if hit by it. The brambler will revert to its functionality as a net if you use an action to unearth the tuber.
This aggressive plant is commonly uprooted by forest gnomes and used to ensnare their much larger enemies.