Gristallix, The Dragon

Gargantuan Dragon, chaotic evil

Armor Class 17

17 Hit Points 600

600 Speed 40ft. 80ft. fly

STR DEX CON INT WIS CHA 26 (+8) 10 (+0) 24 (+7) 18 (+4) 17 (+3) 19 (+4)

Saving Throws Dex +6, Con +13, Wis +9, Cha +10

Dex +6, Con +13, Wis +9, Cha +10 Damage Immunities fire, poison

fire, poison Condition Immunities poisoned, charmed, frightened

poisoned, charmed, frightened Senses blindsight 60 ft., darkvision 120., passive Perception 25

blindsight 60 ft., darkvision 120., passive Perception 25 Languages Most

Most Challenge 21 (33,000 XP)

Lithe. A creature cannot make opportunity attacks against Gristallix if they were the only creature adjacent to the dragon when he moved.

Legendary Resistance (3/day). If Gristallix fails a saving throw, it can chose to succeed instead.

Actions

Multiattack. Gristallix uses his Frightful Presence. He then makes three attacks: one with his bite, and two with his claws.

Bite. Melee Weapon Attack: +14 to hit, reach 15ft., one target. Hit 19 (2d10 + 8) piercing damage.

Claw. Melee Weapon Attack: +14 to hit, reach 10ft., one target. Hit 15 (2d6 + 8) slashing damage.

Tail. Melee Weapon Attack: +14 to hit, reach 20ft., one target. Hit 17 (2d8 + 8) bludgeoning damage.

Mesmerising Gaze (1/day). Gristallix fixes his burning eyes on a creature he can see within 60 feet. That creature is Charmed by Gristallix, and will fight to defend him, even against creatures it previously considered unshakable allies. Their will is completely dominated by Gristallix. At the end of each of the Creature's turns, it may attempt a DC 21 Charisma save, ending the effect on a success.

Frightful Presence. Each creature of Gristallix's choice that is within 120 feet of him and aware of it must succeed on a DC 21 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Gristallix's Frightful Presence for the next 24 hours.

Incandescent Fume Breath (recharge 5-6). Gristallix exhales fire in a 60 foot cone. Each creature in the cone must make a DC 21 Dexterity saving throw, taking 63 (18d6) fire damage and 14 (4d6) poisoned damage. For 3 turns thereafter, creatures who start their turn in the area that was affected by the Incandescent Flame Breath, or move into the in the area that was affected by the Incandescent Fume Breath for the first time on their turn, must make a DC 21 Constitution saving throw, taking 21 (6d6) poison damage on a failed saving throw and is poisoned until the end of the next turn they do not take damage from the poisonous fumes. They only take half that amount on a successful saving throw.

Smash When Gristallix is next to a specially prepared piece of terrain, he may push it over with his bulk, sending it hurtling down towards his target. If he smashes with a pillar, he draws a 30 foot line from the base of the pillar. If he drops a pile of rocks, he draws a ten foot radius circle. All creatures in the area of effect must succeed on a DC 21 Dexterity saving throw, taking 33 (6d10) bludgeoning damage on a failed saving throw, and half that amount on a successful saving throw. The area of effect is now also treated as difficult terrain.

Legendary Actions

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

Detect. Gristallix makes a Wisdom (perception) check.

Tail attack. Gristallix makes a tail attack.

Wing Attack (Recharge 4-6) Costs 2 actions. Gristallix beats his wings. Each creature withing 10 feet of him must succeed on a DC 21 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage, be pushed away 5 feet away from Gristallix, and be knocked prone. Gristallix can then fly up to half its flying speed.

Slide. Gristallix moves upto 40 feet, this movement does not provoke attacks of opportunity.

Smash. Gristallix uses a smash attack.