Glas Ghaibhleann
Deep within the twisted realm of Tir Na Nog, a massive beast is not born, but constructed. Bones of mana infused steel covered by thin, sallowed skin adorn the creature, its emaciated appearance deceptively hiding its horrifying strength. Long forgotten by those of the mortal realms, the tortured monstrosity awaits the call of its masters to reawaken it.
Ancient Siege Weapons. During the last reign of Cichol, Glas Ghaibhleanns were used heavily to not just break through the walls of cities, but to break the morale of those living inside. Easily standing almost fifteen feet tall when hunched over and over twenty feet tall when standing upright, Glas Ghaibhleanns are large enough to smash through most structures with ease and rip them apart with its four arms.
While appearing similar to the giants at a passing glance, the Glas Ghaibhleann is not of this world, and are summoned to it through an exhausting ritual that requires extensive construction of its massive skeleton. Only very experienced summoners have a chance of properly summoning this creature, and due to its feral nature, the skeleton must be heavily restrained prior to its summoning to prevent it from killing its summoners. In addition to the material requirements for its skeleton, the Glas Ghaibhleann consumes gold at a rapid pace, not needing air, food, or water due to its constructed nature.
Fickle Loyalty While the Glas Ghaibhleann can technically be summoned by any spellcaster with the proper experience and resources, the creature is never owned by the summoner. The creature is merely borrowed from Cichol, God of the Fomorians. Typically to complete the summoning, the caster must make a deal with the fickle deity, however due to the creature's nature it may still disobey if the caster goes back on their bargain or runs out of gold to feed its neverending hunger.
Glas Ghaibhleann's Lair
A Glas Ghaibhleann is typically summoned deep underground, as to accomodate a large space for not only the skeleton, but also the restraints required for the summoning.
Lair Actions
On initiative count 20 (losing initiative ties), the Glas Ghaibhleann takes a lair action to cause one of the following effects:
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The Glas Ghaibhleann causes a necrotic mist to rise from the ground of the lair. This is considered difficult terrain and any creature attempting to maintain concentration within the mist must make a DC 16 Constitution saving throw in order to maintain concentration. The Glas Ghaibhleann and the gargoyles summoned by it are unaffected by the difficult terrain.
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The Glas Ghaibhleann consumes raw gold present within the lair. The Glas Ghaibhleann regains 30HP by doing this.
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The Glas Ghaibhleann strikes the supports that were holding its restraints with its swords. The support beam falls on the ground in a 5ft wide, 20ft long line. Any creatures caught below the support must make a DC16 Dexterity saving throw to avoid the support beam. If the saving throw is failed, the creature takes 18(4d8) bludgeoning damage.
Regional Effects
The lair of a Glas Ghaibhleann is typically dark and secluded, appearing barren as the minerals and resources have been stripped out of the earth by either the creature, summoner, or both. One of the most common site to summon a Glas Ghaibhleann is deep within a gold mine, having the local townspeople unwittingly gather the resources for the summon.
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Gargoyles may magically appear in numbers of 1 to 6 in a 5 mile radius around an already summoned Glas Ghaibhleann. These gargoyles will automitcally be hostile.
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The Glas Ghaibhleann exudes a psychic aura, able to subjugate lower intelligence creatures including humans to bring it gold, however it cannot do any more than this. If summoned using the example above, the town it is underneath will typically be stricken with poverty.
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Fomorians have a rare chance to appear within the area, being summoned through portals in a 2 mile radius around the lair. In order to determine presence of Fomorians, roll a d100, and if the result is lower than 15, a single Fomorian will appear through a portal to Tir Na Nog. The portal closes immediately after the Fomorian successfully crosses over.
When the Glas Ghaibhleann dies, these effects fade immediately, except for the poverty, which takes 1d12 years to recover.
Credit: Mabinogi Wiki
Glas Ghaibhleann
Huge Monstrosity, Neutral Evil
- Armor Class 15
- Hit Points 220(30d12+25)
- Speed 40ft.
STR DEX CON INT WIS CHA 27 (+8) 10 (+0) 23 (+6) 10 (0) 16 (+3) 10 (+0)
- Skills +10 Intimidation, +13 Perception, +18 Athletics
- Damage Resistances bludgeoning, piercing, slashing
- Damage Immunities Force, Necrotic, Poison
- Condition Immunities Blinded, Charmed, Grappled, Poisoned
- Senses blindsight 90 ft., passive Perception 23
- Languages Understands Primordial, Fomorian, Common, but can't speak
- Challenge 13 (10,000)
Magic Resistance. The Glas Ghaibhleann has advantage on saving throws against spells and other magical effects.
Regeneration. The Glas Ghaibhleann regains 20 hit points at the start of its turn. If the Glas Ghaibhleann takes fire damage, the Glas Ghaibhleann cannot regenerate it. The Glas Ghaibhleann dies only if it starts its turn with 0 hit points and doesn't regenerate.
Freedom of Movement. The Glas Ghaibhleann ignores difficult terrain.
Siege Monster. The Glas Ghaibhleann deals double damage to objects and structures.
Legendary Resistance (1/day). If the Glas Ghaibhleann fails a saving throw, it can choose to succeed instead.
Actions
Multiattack. The Glas Ghaibhleann makes two sword swing attacks.
Sword Swing Melee Weapon Attack: +13 to hit, reach 10ft., one target. Hit 36 (8d6 + 8) slashing damage.
Windmill (Recharge 2-3) Melee Weapon Attack: +13 to hit, all creatures within a 15ft radius. Hit: 50 (12d6 + 8) slashing damage.
Beam of the Gods (Recharge 6). The Glas Ghaibhleann targets a point in a line up to 75 ft. away. The Glas Ghaibhleann then fires the beam, in a 75 ft. line, from the end of which a 30 foot line continues at an acute angle to the first in the direction the Glas Ghaibhleann is facing. The beam explodes along its path and at each point of impact in a 5 ft. radius. All creatures caught in the beam must make a DC 16 Dexterity saving throw, taking 45 (10d8) radiant damage on a failed save, or half damage on a successful one. If the creature is within 10 ft. of the Glas Ghaibhleann, it takes double damage. If the creature is more than 60 ft. away from the Glas Ghaibhleann, it takes half damage (this damage can be halved again on a successful save).
Reactions
Counterattack (Recharge 2-3). As a reaction the Glas Ghaibhleann counters a successful melee attack made against it, taking no damage from the attack and dealing twice the damage it would have recieved to the creature that attacked it. Stealth attacks can be countered by rolling a perception check with DC equivalent to the creature's stealth roll plus 1. Stealth damage is not factored into the damage Counterattack does.
Legendary Actions
The Glas Ghaibhleann can take 3 legendary actions, choosing from one of the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The Glas Ghaibhleann regains spent legendary actions at the start of its turn.
Wingbeat The Glas Ghaibhleann beats its massive wings, creating strong winds to push creatures away. All creatures in a 50 ft. cone in front of the Glas Ghaibhleann must make a DC 16 Strength saving throw or be pushed back 30 ft. If the creature rolls below a 5, it is knocked prone and pushed back 50 ft. Creatures attempting to maintain concentration must succeed on a DC 16 Constitution saving throw in addition to the Strength saving throw. If either saving throw is failed, concentration is broken.
Summon Gargoyles.(Costs 3 actions) The Glas Ghaibhleann summons six gargoyles at random points in a 50 ft. radius around itself. These gargoyles have 25 hit points. These creatures are unaffected by the other abilities of the Glas Ghaibhleann. This ability cannot be used if any gargoyles are present.
Horrific Scream. The Glas Ghaibhleann screams, letting out a wave of foul, cursed energy. Each creature within a 50 ft. radius of the Glas Ghaibhleann must succeed on a DC16 Wisdom saving throw, being frightened on a failed save.