False Appearance. While the blight remains motionless, it is indistinguishable from a dead tree.
Multiattack. The blight makes one Branch attack and one Grasping Root attack. Branch. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 2d6+3 bludgeoning damage. Grasping Root. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature not grappled by the blight. Hit: The target is grappled (escape DC 13). Until the grapple ends, the target takes 7 1d6+3 bludgeoning damage at the start of each of its turns. The root has AC 13 and can be severed by dealing 6 slashing damage or more to it at once. Cutting the root doesn't hurt the blight, but ends the grapple.