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Basilisk, Crystal

Medium monstrosity, unaligned

Armor Class 15 (natural armor)
Hit Points 112 (15d8 + 45)
Speed 20 ft.

18 (+4) 8 (-1) 16 (+3) 2 (-4) 10 (+0) 7 (-2)

Saving Throws Dexterity +2
Damage Vulnerabilities thunder
Damage Resistances bludgeoning, piercing, and slashing damage from nonmagical attacks
Damage Immunities radiant
Condition Immunities blinded
Senses darkvision 60 ft., passive Perception 10
Challenge 6 (2,300 XP)

Special Traits

  • Crystallizing Gaze. If a creature starts its turn within 30 feet of the crystal basilisk and the two of them can see each other, the crystal basilisk can force the creature to make a DC 14 Constitution saving throw if the crystal basilisk isn’t incapacitated. On a failed save, the creature magically begins to turn to crystal and is restrained. It must repeat the saving throw at the end of its next turn. On a success, the effect ends. On a failure, the creature is petrified until freed by the greater restoration spell or other magic. A creature that isn’t surprised can avert its eyes to avoid the saving throw at the start of its turn. If it does so, it can’t see the basilisk until the start of its next turn, when it can avert its eyes again. If it looks at the crystal basilisk in the meantime, it must immediately make the save.


  • Multiattack. The crystal basilisk makes two Bite attacks.
  • Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage plus 3 (1d6) radiant damage.
  • Shard Breath (recharge 5-6). The crystal basilisk exhales crystal shards in a 30-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 28 (8d6) piercing damage on a failed save, or half as much damage on a successful one.


  • Crystalline Hide. When a creature hits the crystal basilisk with a nonmagical metal weapon while within 5 feet of the crystal basilisk, the crystal basilisk can toughen its skin to crystalline hardness. The attacker must succeed on a DC 15 Dexterity saving throw or the crystal basilisk deflects the damage from the attack and the attacker is blinded until the end of its next turn as the weapon sparks on the basilisk’s hide.

Crystal Basilisk Blood

Wondrous item, very rare

The blood of a crystal basilisk imbues a gemstone worth at least 50 gp with rainbow radiance. If a gemstone is soaked in one gallon of crystal basilisk blood for 24 hours, the gemstone becomes a gem of brightness with 50 charges. A successful DC 15 Dexterity or Intelligence check using alchemist’s supplies harvests 1 gallon of blood from a freshly-slain crystal basilisk. If the check succeeds by 5 or more, the harvested amount increases to 2 gallons. The blood congeals after it imbues a gemstone with radiance and can’t be used to make another gemstone.

Section 15: Copyright Notice
Tegel Manor © 2019, Frog God Games, LLC; Authors: Bill Webb & Thom Wilson with additional material by Gabor Lux