Despite its size, the twisted and gnarled tree-man moves precisely and quietly. It cloaks itself in a cape of darkness with only its pale face visible, lit by blue flame eyes.
Damned Fey. Mandrianos are a perversion of treants grown from soil defiled by ritual sacrifice. Bound to shepherd the undead, they ceaselessly wander their territories, collecting and tending their mindless charges. Beneath their billowing cloaks, their bodies have the gray color of driftwood. A mandriano’s cloak is stitched from leaves of darkness and blows apart as if struck by a gale when the mandriano dies.
Never Alone. Mandrianos work in pairs or small teams as they gather their flocks of undead and hunt for the living. They drain the essence of living creatures to feed themselves, their deceptively long arms allowing them to quickly snatch up prey.

Mandriano

Large plant, lawful evil

Armor Class 13 (natural armor)

Hit Points 60 (8d10 + 16) 8d10+16

Speed 40ft

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STR

15 +2

DEX

6 -2

CON

15 +2

INT

10 0

WIS

10 0

CHA

7 -2

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Skills Athletics +5, Perception +3, Stealth +1

Damage Vulnerabilities fire

Damage Resistances necrotic; bludgeoning, piercing, and slashing from nonmagical attacks

Damage Immunities poison

Condition Immunities exhaustion, poisoned

Senses darkvision 60 ft., passive Perception 13

Languages understands Common and Sylvan, but can’t speak

Challenge 5

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Actions

Multiattack. The mandriano makes two swipe attacks.
Swipe. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) 2d6+4 slashing damage. If the target is Medium or smaller, it is grappled (escape DC 14). Until this grapple ends, the target is restrained. It can grapple up to three creatures.
Consume the Spark. The mandriano drains the essence of one grappled target. The target must make a DC 14 Constitution saving throw, taking 13 (4d6) 4d6 necrotic damage on a failed save, or half as much damage on a successful one. The target’s hp maximum is reduced by an amount equal to the necrotic damage taken, and the mandriano regains hp equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hp maximum to 0. A humanoid slain in this way rises 24 hours later as a zombie or skeleton under the mandriano’s control, unless the humanoid is restored to life or its body is destroyed. The mandriano can control up to twelve undead at one time