Arbuchus

Dreadful Flames: Fire resistant creature take normal damage from Arbuchus’ fire, non-fire resistant creatures take double damage.  

Eternal Knowledge. Arbuchus know and can use all spells, and knows all about every ability, race, magic item and other item in existence. 

Fire breathing Proficiency. 8+ in fire breathing (any roll to breathe fire)                

Spellcasting. Arbuchus is a 9-level spellcaster, have a spell save D20 and require +13 to hit on spell attacks.

Anti-Elemental Strike. All elementals and elemental items are immediately annihilated if Arbuchus roll over 18 on an arcana check.

Defiance of Death. Arbuchus can give 10 Hp to one creature per turn if the creature is reduced to 0 or 1 Hp.

Flaming Storm. Arbuchus covers an area within a 100 m (328 ft) radius in flames, forcing each creature within the area to pass 1 round (unless the creature has fire resistance) and deals 3D20x3D4 fire damage. All creatures have disadvantage in saving throws.

Quake the Earth. Arbuchus shakes the ground by it’s strong legs and huge mass. Each creature within an area of 75 m (246 ft) must beat Arbuchus in a strength  roll to avoid being proned, and all creatures within 25 m (82 ft) have disadvantage in said strength roll

Bite. Melee Attack: +13 to hit, reach 3 m (10 ft), one target, deal 3D12 + 10 piercing damage and 2D6 bludgeoning damage

Claw Swipe. Melee Attack: +13 to hit, reach 6 m (20 ft), 2 targets, deal 3D10 + 6 slashing damage

Tail Strike. Melee Attack: +15 to hit, reach 20 m (66 ft), 1 target, deal 2D10 + 6 bludgeoning damage

Wing Swipe. Melee Attack: +16 to hit, reach 20 m (66 ft), 2 targets, deal 2D6 piercing, 2D6 slashing and 1D4 bludgeoning damage.

Stunning Fire Breath attack. Ranged Attack: +12 to hit, reach 60 m (197 ft), effect a cone of 30˚ degrees, deal 3D12 + 15 fire damage, and the strucked creature is stunned for 3r.

Roar of Terror. All creatures within 100 m (328 ft) become deaf if roll lower than 18 on a Constitution save.

Wind of Wings. Arbuchus create a powerful wind using his large wings, forcing each large sized or smaller creatures to roll 12 or more on a Strength or Constitution save, if fails they become proned. 

Avenging Claws. If enemy attack the legs of Arbuchus, Arbuchus may make a Dex roll which require +16 to hit, and deals 2D6 piercing and 2D6 slashing damage. 

Combusting Magic. When Arbuchus attacked by a spell, he/she may roll for fire breathing, and if beats the roll of the spellcaster destroy the spell. If the spell was directed toward the head or front of the Arbuchus, he gets advantage. 

Vengeful Flames. When Arbuchus is damaged by a physical attack, he may roll for fire breathing and if beat the attacking enemy’s dexterity save will deal 3D12 + 15 fire damage 

Arbuchus may use any of following legendary actions every other round. 

Blast of Terror. Arbuchus blast a bright magical beam to all hostile creatures within 45 m (141 ft) of Arbuchus’ head. Any creature hit must make a Dex save, if rolls below 15 the creature will be stunned for 10 rounds and take 3D12 fire damage, 3D12 radiant damage and 3D6 necrotic damage. The creature is also blinded for 10 rounds, deafened and enabled to sense via touch, smell or taste for 4 rounds and is also frightened, 

Deadly Breath. Arbuchus may deal 5D20x2D6 + 30 necrotic damage to all hostile creatures who fail an Arcana saving throw of 18 within 60 m (197 ft) from Arbuchus. This action require over 18 on an Arcana check to succeed.

Gaze of Madness. A creature making eye contact with Arbuchus must roll over 18 on a wisdom saving throw, if failed the creature’s wisdom will be reduced to 3.

Nightmare of the Fiends. All fiends, devils or warlock pact of the fiend must beat Arbuchus in an arcana check, and if they fail they will immediately be sent to the nine hells.