Battle Horn of the Thunderhowl

This magical Dwarven Beserker horn, when sounded, allows the wearer to call upon the Spirit of Vorrik Thunderhowl in times of great need (1X Long Rest).  It is a battle horn with iron bands, covered in ancient runes. It has an inscription on it in Dwarven that says "Vorrik Thunderhowl Fight For Us".  

• When Fiends or Undead are within 300 feet, the runes on the horn begin to glow. 
• The horn has limited sentience and bonds to the one it chooses immediately. 
• The one holding it has Proficiency with Smith's Tools. 
• If an evil creature touches it they are burned for 1d6 Radiant damage.  
• If it is ever lost, its owner can sense roughly where it is, anywhere in the universe.  

Summoning Vorrik Thunderhowl

When the horn is sounded, it is heard from 600 feet away.  Vorrik Thunderhowl’s spectral form emerges from molten embers, his presence shaking the earth like a battle drum. He can assist in combat for one turn, unleashing a mighty blow or invoking a Dwarven war cry that grants the party advantage on attack rolls for a round.

Vorrik Thunderhowl

Legendary Dwarven Berserker Spirit
Medium Undead (Dwarven Spirit), Chaotic Good

Armor Class: 18 (Ethereal Plate)
Hit Points: 225 (18d10 + 90)
Speed: 30 ft., Hover 20 ft.

Abilities
STR: 22 (+6) | DEX: 14 (+2) | CON: 20 (+5) | INT: 12 (+1) | WIS: 14 (+2) | CHA: 16 (+3)

Saving Throws: STR +10, CON +9, WIS +6
Skills: Athletics +12, Perception +7, Intimidation +8
Damage Resistances: Necrotic, Radiant, Fire, Cold
Damage Immunities: Poison, Psychic
Condition Immunities: Charmed, Frightened, Poisoned, Exhaustion
Senses: Darkvision 120 ft., Passive Perception 17
Languages: Common, Dwarvish, Celestial

 Legendary Traits

• Ethereal Berserker: Vorrik exists in a spectral state but retains his full physical might. He can shift between the Material and Ethereal Plane as a Bonus Action. While in the Ethereal Plane, he is immune to non-magical attacks.
• Molten Will: If Vorrik is reduced to 0 HP, he erupts in a final Molten Wrath explosion (see below), then vanishes until summoned again.
• Bound to the Anvil: If the owner invokes his name in battle, Vorrik materializes for 1 minute (10 rounds) or until reduced to 0 HP.

Legendary Abilities

• Multiattack. Vorrik makes two melee attacks per turn.
• 🛠 Thunderhowl Strike. Melee Weapon Attack: +12 to hit, reach 5 ft., one target.  Hit: 2d10 + 6 Bludgeoning damage + 2d8 Fire damage.
• If the target is Large or smaller, they must succeed on a DC 18 Strength saving throw or be knocked prone.
• 🔥 Molten Cleave. Vorrik swings his hammer in a 10 ft. radius, forcing all creatures in range to make a DC 16 Dexterity saving throw.
• On a fail, they take 4d8 Fire damage and are burned for 1d6 Fire damage per round (can be extinguished).  On a success, they take half damage.
• 🛡 Dwarven Defiance (Recharge 5-6). As a Reaction, Vorrik can reduce incoming damage by half for himself or an ally within 10 ft. If used against a spell, he instead gains advantage on the saving throw.

Legendary Actions (3 per round)

Vorrik can use one of the following at the end of another creature’s turn:

• Molten Slam. Vorrik slams his hammer into the ground, creating a shockwave (15 ft.). All enemies in range must succeed on a DC 17 Strength saving throw or be pushed back 10 feet and knocked prone.
• Ember Shroud. Vorrik channels his forge spirit, giving himself resistance to all damage until the start of his next turn.
• War Cry of the Ancients. Vorrik bellows a dwarven warcry, granting advantage on attack rolls to allies within 30 ft. until the end of their next turn.

Final Stand – Molten Wrath

Upon being reduced to 0 HP, Vorrik releases a final eruption of molten fury:

• All enemy creatures within 20 feet must make a DC 18 Dexterity saving throw or take 6d10 Fire damage.
• Any allies in the area gain temporary HP equal to 2d10 + the Owner's Charisma modifier as Vorrik’s spirit fortifies them.
• After this, Vorrik vanishes back into the Ethereal Plane, waiting to be summoned once more.

Roleplay Traits

• Vorrik is a warrior’s spirit, bound by honor and battle. He respects strength and courage but despises cowardice.
• Vorrik hates Fiends and Undead with a burning passion, and will prioritize attacking them over all else.
• If someone defiles a forge, he immediately enters a rage state.

Notes: Proficiency: Smith's Tools, Can only be used in times of great need, warrior of Good alignment., Summoning, divination