Crystal Titan

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Huge Elemental, Neutral

Armor Class 18 (natural armor)

Hit Points 300 (30d12+90)

Speed 40 ft. burrow 20 ft.

STR 25 (+7)

DEX 8 (-1)

CON 16 (+3)

INT 1 (-5)

WIS 10 (+0)

CHA 1 (-5)

Saving Throws Con +7, Wis +4

Damage Vulnerabilities lightning

Damage Resistances bludgeoning; piercing; slashing from nonmagical attacks

Damage Immunities poison, psychic

Condition Immunities proned, charmed, frightened

Senses darkvision 60 ft., passive Perception 10

Languages Primordial

Challenge 12 (8,400 XP) Proficiency Bonus +4

Legendary Resistance (3/Day). If the Crystal Titan fails a saving throw, it can choose to succeed instead.

Immutable Form. The Crystal Titan is immune to any spell or effect that would alter its form.

Crystal Aura. Any creature that starts its turn within 10 feet of the Crystal Titan takes 10 (3d6) radiant damage.

Actions

Multiattack. The Crystal Titan makes two slam attacks and one crystal shard attack.

Slam. Melee weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 27 (3d12+8) bludgeoning damage.

Crystal Shard. Ranged weapon Attack: +10 to hit, range 60 ft., one target. Hit: 17 (2d10+6) piercing damage. The Crystal Titan hurls a shard of its own crystalline body as a ranged attack.

Quake (Recharge 5-6). The Crystal Titan slams the ground. Each creature within 30 feet must succeed on a DC 18 Dexterity saving throw or take 45 (10d8) bludgeoning damage and be knocked prone.

Legendary Actions

The Crystal Titan can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The Titan regains spent legendary actions at the start of its turn.

Detect. The Crystal Titan makes a Wisdom (Perception) check.

Slam Attack. The Crystal Titan makes one slam attack.

Shatter (Costs 2 Actions). The Crystal Titan causes crystal shards in a 15-foot radius centered on itself to erupt. Each creature in that area must make a DC 18 Dexterity saving throw, taking 30 (8d6) slashing damage on a failed save, or half as much on a successful one.

Environment Mountain, Underdark

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Lore & Description

Appearance

The Crystal Titan towers over all, its body a majestic blend of transparent and multicolored crystals that shimmer in the light. Jagged crystal formations protrude from its arms and shoulders, making each movement a display of primal power.

Behavior & Origins

Crystal Titans are ancient guardians of the earth, born from the heart of the mountains. They are revered by elemental beings and often protect sacred grounds. Although they are typically neutral, they can be fierce when their territory is threatened or if they perceive a form of desecration.

Monster Image

Generation Info

Original prompt:
"A towering earth elemental made of crystal"

Created: Jan 28, 2026
Modified: May 31, 2026

Crystal Titan

Actions

Legendary Actions

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Lore & Description

Appearance

Behavior & Origins

Monster Image

Generation Info

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