Vines, roots, and other vegetation that has become infused with aberrant energies emanating from agathys can entangle those that come near.
Effect: When a creature starts its turn in or adjacent to a square of grasping vines, it must make a saving throw. If the creature saves, it’s slowed until the start of its next turn; otherwise, it’s restrained until the start of its next turn.
Usage: Creatures familiar with the local landscape might use grasping vines as part of a trap for unwary visitors, focusing their attention subsequently on the ones who remain unrestrained.
Published in The Plane Above, page(s) 107.