Gargantuan Construct, Unaligned
AC 20 Natural Armor, Gemstone Carapace    Initiative +6 (16)
HP 350 (20d20 + 140)
Speed 20 ft., Fly 100 ft. Hover
Mod Save
STR 24 +7 +7
DEX 22 +6 +24
CON 24 +7 +26
Mod Save
INT 14 +2 +2
WIS 18 +4 +20
CHA 16 +3 +3
Skills Arcana +9, Perception +14
Resistances Cold, Fire, Lightning, Necrotic, Radiant
Immunities Poison, Psychic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks; Charmed, Exhaustion, Frightened, Paralyzed, Poisoned
Senses Truesight 120 ft.; Passive Perception 24
Languages All Understands but does not speak.
CR 22 (XP 41,000; PB +7)
Traits

Living Gemstone Carapace.
The Auroral Drakelfly’s body is composed of sentient, magically infused gemstones. When struck, its shattered fragments reform instantly, making it nearly invulnerable. Any attempt to mine or break off a gemstone requires a DC 28 Arcana or Smith’s Tools check, and the Drakelfly must be fully defeated first.

Shimmering Hypnosis.
The rapid, rhythmic beating of the Drakelfly’s wings creates a hypnotic effect. Creatures that begin their turn within 60 feet must make a DC 21 Wisdom saving throw or become Charmed for 1 minute, unable to attack the Drakelfly. A charmed creature may repeat the save at the end of each turn.

Prismatic Eruption.
When the Drakelfly is reduced to half HP, it releases an explosive pulse of prismatic energy. Every creature within 60 feet must make a DC 22 Dexterity saving throw, taking 10d10 radiant damage on a failure, or half on a success. This explosion also recharges its Gemstone Rays immediately.

Elemental Adaptation.
Each time the Drakelfly takes damage from an energy type (fire, cold, lightning, etc.), its body shifts, absorbing that energy and gaining immunity to it for the next 1 minute.

Actions

Multiattack.
The Drakelfly makes three attacks: one with its crystalline mandibles and two with its Prismatic Wing Blades.

Crystalline Mandibles.
Melee Weapon Attack: +14 to hit, reach 10 ft., one target.
Hit: 38 (6d10 + 7) slashing damage.

Prismatic Wing Blades.
Melee Weapon Attack: +14 to hit, reach 15 ft., one target.
Hit: 30 (5d8 + 7) radiant damage.

Gemstone Ray (Recharge 5-6).
The Drakelfly fires three beams of pure magical energy at up to three creatures within 120 feet. Each creature must make a DC 21 Dexterity saving throw or take 50 (10d10) damage. Roll 1d6 to determine the damage type:

1 - Ruby Flare - Fire
2 - Sapphire Shock - Lightning
3 - Emerald Pulse - Poison
4 - Amethyst Laceration - Psychic
5 - Diamond Burst - Radiant
6 - Obsidian Collapse - Necrotic

Legendary Actions

Gemstone Pulse. (Costs 1 Action) The Drakelfly pulses with arcane energy, forcing one creature within 30 feet to make a DC 21 Constitution saving throw or be stunned until the end of its next turn.

Hypnotic Flare. (Costs 2 Actions) The Drakelfly's wings emit a dazzling burst of light. All creatures within 20 feet must make a DC 21 Wisdom saving throw or be blinded for 1 minute (save ends at end of turn).

Refracted Shift. (Costs 3 Actions) The Drakelfly teleports up to 120 feet, leaving behind a holographic illusion of itself in its place. The illusion vanishes at the start of its next turn.

The Auroral Drakelfly can take three legendary actions, choosing from the options above.



Description

The Auroral Drakelfly is a colossal, mechanical dragonfly forged from living, enchanted gemstones. It soars over mystical landscapes and ancient ruins, its faceted, crystalline body refracting light into mesmerizing prismatic displays. Scholars believe it was not created by mortal hands, but rather self-assembled over eons, as enchanted gemstones from across the world slowly coalesced into a sentient, clockwork entity.

Despite its mechanical appearance, the Auroral Drakelfly is alive. Each of its multicolored segments is composed of a different enchanted gem, pulsing with arcane energy. Legends claim that harvesting these gemstones grants immense magical power, but doing so is nearly impossible, as the Drakelfly’s self-repairing nature makes it almost indestructible.

Its wings hum with an eerie, musical resonance, and their rapid movement warps reality around it, leaving shimmering distortions in the air. When angered, the Drakelfly unleashes devastating beams of refracted energy, burning foes with pure elemental force. Some sages whisper that the Auroral Drakelfly is a guardian of a lost civilization, forever watching over some long-forgotten treasure buried beneath the land it patrols.

Harvesting the Drakelfly’s Gems:
If the Drakelfly is slain, its crystalline body slowly disperses over the next 24 hours, shattering into the wind unless harvested by skilled hands. A creature proficient in Arcana or Smith’s Tools can attempt a DC 28 check to extract one gemstone from its body.

Each harvested gem retains one charge of the Drakelfly’s power and can be used to cast a spell once before becoming inert.

Gemstone

Spell

Ruby Core

Meteor Swarm (9th)

Sapphire Heart

Chain Lightning (6th)

Emerald Vein

Cloudkill (5th)

Amethyst Eye

Phantasmal Killer (4th)

Diamond Prism

Prismatic Spray (7th)

Obsidian Core

Finger of Death (7th)

Once the spell is used, the gemstone loses its magic but remains an extremely valuable gem, worth 10,000-50,000 gold to the right buyer. However, many who possess these gemstones report strange dreams of shimmering wings and hear the faint hum of gears in the night…

Habitat: Any

DiggDoug

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