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Mindflayer Elder Brain Dragon

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A1 mini

0.12mm layer, 2 walls, 15% infill
0.12mm layer, 2 walls, 15% infill
Designer
20.7 h
1 plate
5.0(2)

A1 Mini 85% scale 0.12mm layer, 2 walls, 15% infill
A1 Mini 85% scale 0.12mm layer, 2 walls, 15% infill
Designer
16.3 h
1 plate

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Matte Ash Gray (11102) / Filament with spool / 1kg

Description

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This model was designed with tabletop play in mind, my goal is to help make combat encounters feel more epic.

 

All files have been designed and test‑printed with a focus on a good balance between visual detail, print time, material usage, and ease of support removal. 

 

Please note that printing environments, slicer settings, and filament quality can vary, which may result in differences between prints. Adjustments to settings may be required to achieve the best results on your specific setup.

Elder Brain Dragon

FTDp194

 
Gargantuan Aberration, typically Lawful Evil

AC 17 (natural armor)

Initiative +1 (11)

HP 350 (20d20 + 140)
Speed 40 ft., Fly 80 ft. (hover)
  modsave   modsave   modsave
Str27+8+8 Dex13+1+1 Con25+7+14
Int21+5+12 Wis19+4+11 Cha24+7+14
Skills Arcana +12, Insight +18, Perception +18
Immunities Psychic; Charmed, Frightened
Senses Blindsight 120 ft., Passive Perception 28
Languages Deep Speech, Draconic, telepathy 5 miles
CR 22 (XP 41,000; PB +7)

Traits

Legendary Resistance (4/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Siege Monster. The dragon deals double damage to objects and structures.

Unusual Nature. The dragon doesn't require air or sleep.

Actions

Multiattack. The dragon makes one Bite attack, two Claw attacks, and one Tentacle attack.

Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 11 (2d10) psychic damage.

Claw. Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 11 (1d6 + 8) slashing damage.

Tentacle. Melee Weapon Attack: +15 to hit, reach 15 ft., one creature. Hit: 12 (1d8 + 8) psychic damage. If the target is Huge or smaller, it is grappled (escape DC 18). The dragon can have up to four targets grappled at a time.

Tadpole Brine Breath (Recharge 5–6). The dragon exhales brine in a 120-foot line that is 15 feet wide. Each creature in that area must make a DC 22 Constitution saving throw, taking 55 (10d10) psychic damage on a failed save, or half as much damage on a successful one. On a success or failure, if the creature isn't a Construct or an Undead, it becomes infested with illithid tadpoles.

While infested, the creature takes 16 (3d10) psychic damage at the start of each of its turns. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself after it succeeds on three of these saves. If the creature is targeted by magic that ends a curse or restores 40 hit points or more, the tadpoles infesting the creature are killed instantly, ending the effect on the creature.

If a Humanoid is reduced to 0 hit points while infested, the creature is stable but remains unconscious for 6d12 hours. When the period of unconsciousness ends, the creature transforms into a mind flayer (see the Monster Manual) with all its hit points. Casting a wish spell on the unconscious creature rids it of the infestation and prevents it from turning into a mind flayer.

Legendary Actions

Legendary Action Uses: 3. Immediately after another creature's turn, the elder brain dragon can expend a use to take one of the following actions. The elder brain dragon regains all expended uses at the start of each of its turns.
  • Tentacle. The dragon makes one Tentacle attack.
  • Shatter Concentration (Costs 2 Actions). The dragon targets a creature it is grappling. The target's concentration on a spell it has cast or an ability it is maintaining ends, and the target takes 19 (3d12) psychic damage.
 
Source: FTD, page 194

 

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