Multiattack. The demonthorne mandrake makes two slam attacks.

Slam. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) bludgeoning damage.

Spore Pod. As an action, a demonthorn mandrake can spit a spore pod to a range of 30 feet. The pod then explodes in a 10-foot-radius burst. All living creatures in the area take 1d8 points of damage as thorny growths burst from their faces. At the start of each of the demonthorn mandrake’s turns, these thorns continue to grow, dealing 5 points of damage. Each affected opponent can make a DC 14 Constitution saving throw each round. If that save is successful, the thorns become brittle and fall off the target’s face. The thorns can also be pulled from a creature as an action, dealing 1d8 points of damage to the target. Applying a vial of holy water to the thorns causes them to shrivel and die. If a creature is already infested with spore pod thorns, it is immune to the damage and effect of this attack. If a Medium or larger creature is killed by damage from a demonthorn mandrake’s thorns, a fully grown demonthorn mandrake emerges from the corpse in 1d4 hours.

Tangle Root. A demonthorn mandrake can extend its roots to a radius of 30 feet as an action. At the start of the demonthorn mandrake’s turn, opponents in the area must make a DC 14 Dexterity saving throw or be restrained. A mandrake can’t move when its roots are extended, but can retract the roots as a bonus action. When a mandrake’s roots are extended, they scream with humanlike voices until retracted.