Monstrous Mondays: From Hell it Came! Tabonga the Tree Monster

Spent the weekend doing a combination of X1 Isle of Dread and I1 Dwellers of the Forbidden City.  They finished up the city and then continued down the east coast of the island.

They got to the village Tanaroa where I essentially had them in my version of King Kong.  Save instead of a gargantuan ape I had them fight a gargantuan troll-like monster I alluded was Vaprak the Destroyer (which is just an aspect of Demogorgon in my games, and I have an LJN AD&D Troll toy to use for him) and the Blood Apes.

But the monster that I was most excited for was FINALLY getting to use something I have wanted to use for years; pretty much ever since I had a copy of Isle of Dread.  Tobonga the Tree Monster.

If have talked about Tabonga before. This stupid thing scared me so much as a little kid that to this very day I get gifts of tree monsters from my brothers and sisters on Halloween as gag gifts.

Well, this past weekend my sons' group the Treasure Hunters killed his demonic wooden ass.

Tabonga
The demonic monster known as a Tabonga is the cursed soul of a murder returned from the dead.  The first tabonga was buried within the trunk of a tree, believing that the spirit of the tree would prevent the murderer from coming back. However, the demonic influences on the tree caused it to return as a twisted mockery of both human and tree.  No longer fully human, plant or undead the monster is now demonically driven to commit more murders starting with the ones that condemned it to death.

Tabonga attack with two slam attacks.  It will attack until it's chosen victims are dead.  Usually, nothing but fire will prevent it from pursuing or attacking its victims.

Some tabonga have a unique kill. Some can only be killed by using the same knife, sword or axe that originally condemned them to death. Others may be killed normally via fire or radiant damage.

Tabonga
Basic/Expert Stats
Armor Class: 3
Hit Dice: 11
Move: 45' (15')
Attacks: 2 blows
Damage: 2-12/2-12
No. Appearing: 0 (1)
Save As:  Fighter 11
Morale: 12
Treasure Type: Nil
Alignment: Chaotic

Special: Save vs. Paralysis or be affected as per a Cause Fear spell.
When not moving the tabonga is 90% indistinguishable from a tree.

Tabonga

D&D 5e Stats
Huge plant (demon), chaotic evil

• Armor Class 16 (Natural Armor)
• Hit Points 142 (13d12+60)
• Speed 25 ft.

 STR         DEX       CON       INT         WIS         CHA     
23 (+6)     8 (-1)     21 (+5)     12 (+1)    16 (+3)     10 (+0) 

• Vulnerabilities Fire, Radiant
• Damage Resistance Bludgeoning, Piercing
• Senses passive Perception 13
• Languages Abyssal, Common
• Challenge 10 (5,900 XP)

• False Appearance. While the tabonga remains motionless, it is indistinguishable from a normal tree.
• Fear. The tabonga can cause fear as per the spell. The Wisdom save DC is 14.

Actions

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• Multiattack. The tabonga makes two slam attacks.
• Slam. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: (3d6 + 6) bludgeoning damage.
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