Large giant, lawful neutral

Armor Class 15 (natural armor)
Hit Points 90 (12d10 + 24)
Speed 40 ft.

18 (+4) 8 (–1) 14 (+2) 17 (+3) 11 (+0) 9 (–1)

Skills Perception +2, Medicine +2, Nature +5
Damage Resistances cold, fire
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., tremorsense 60 ft., passive Perception 12
Languages Giant
Challenge 4 (1,100 XP)
Proficiency Bonus +2


  • False Appearance. While the crystallite remains motionless, it is indistinguishable from a large geode.
  • Final Form. When a crystallite dies, its corpse transforms into crystal and becomes a Large object that can be attacked and destroyed (AC 17; hp 45; immunity to poison and psychic damage). It can no longer be affected by spells and effects that target creatures.


  • Multiattack. The crystallite makes two Crystal Limb attacks. It can replace one attack with a use of Biomineralize.
  • Crystal Limb. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) piercing damage, and the crystallite impales the target on its limb, grappling the target (escape DC 14) if it is a Medium or smaller creature. When this grapple ends, the target takes 9 (2d8) slashing damage. The crystallite has two Crystal Limbs, each of which can grapple only one target.
  • Biomineralize. The crystallite absorbs lifeforce from one creature grappled by it. The target must make a DC 14 Constitution saving throw, taking 14 (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 crystallite regains hp equal to that amount. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hp maximum to 0.


  • Calcify. When the crystallite takes 5 damage or more on a single turn, it can reduce its hp maximum by an amount equal to the damage taken and gains a +1 bonus to AC. The reduction and the bonus last until the crystallite finishes a long rest. The crystallite can’t increase its AC above 20 using this reaction.


Fans of multicolored crystals sprout from this giant’s unremarkable grey flesh. Crystallites are contemplative subterranean giants who have mastered growing crystals from living skin. Each of these beings supports a range of colored and patterned crystals, creating the appearance of a living geode.

Obsessive Perfection. Crystallites are obsessed with the perfect patterns that form crystalline structures. Consequently, most crystallites consider order and structure the most desirable qualities a being can possess.

Stone Cousins. Crystallites are smaller cousins of the stone giants who dwell in isolated caverns beneath the earth. Rather than be satisfied with the quiet chronicling of their cousins, crystallites sought a way to become one with the earthen structures they so admire.

Quiet Contemplation. Crystallites spend the majority of their lives in quiet contemplation, attempting to master their physiology and reflect on the nature of crystalline symmetry. Occasionally, crystallites seek out similar beings of greater knowledge like crystalline monoliths and offer devotion in exchange for tutelage.

Section 15: Copyright Notice

Tome of Beasts 3 © 2022 Open Design LLC; Authors: Eytan Bernstein, Celeste Conowitch, Benjamin L. Eastman, Robert Fairbanks, Scott Gable, Basheer Ghouse, Richard Green, Jeremy Hochhalter, Jeff Lee, Christopher Lockey, Sarah Madsen, Ben Mcfarland, Jonathan Miley, Kelly Pawlik, Sebastian Rombach, Chelsea Steverson, Brian Suskind, Mike Welham

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