Deadfall Trap (3-4)

Trigger Vengeant Thorn releases the rope when the wagon is 10 feet away from the target zone --- Effect The tree drops 10 feet in front of the wagon, blocking the road. The tree deals 3d12 bludgeoning damage to anyone beneath the tree when it drops and Immobilizes them. A creature that succeeds at a DC 20 reflex save takes half damage and is not immobilized, instead rolling out of the way in a random direction. On a critical success, it can choose the direction. Mounted creatures do not attempt a save unless their mount attempts a save and fails. If a mounted creature's mount fails the save, the mounted creature can attempt its own DC 18 reflex save by leaping off its mount, taking 1d4 bludgeoning damage from the fall. This damage is taken whether the save is successful or not.