Hell Knight

Hell knights are are impassioned warriors who embrace the reputation that precedes them- blazing a trail of wrathful destruction. Also known as flaming legionnaires when organized in a battalion, these fighters train in the martial techniques of those waging bloody wars on the front lines of the hells and beyond. Some may be hotheaded and reckless while others are methodical and cunning,but they all wield the unforgiving power of devils and other infernal denizens. 

Bonus Proficiencies

3rd-level Hell Knight feature

You gain proficiency of one of the following skills of your choice, Deception, intimidating, performance and persuasion. In addition you can speak, read and understand infernal. If you could already speak that then you can learn another language.

Luciferous Blaze

3rd-level Hellknight feature

Starting at 3rd level, you can use a bonus action to assume a diabolic form for 1 minute, exhibiting horns,  a tail reddened skin, fiery eyes or other devilish features. For the duration, you gain the following benefits

 

• Any weapon you hold becomes wreathed in flames shedding bright light in a 15- foot radius and dim light for an additional 15 feet. The first target you hit with a weapon attack on each of your of your turn takes extra fire damage equal to proficiency bonus.
• When you take the attack action on your turn, you can replace one or more of your attacks to call hellish flames upon a target you can see within 60 ft of you. The target must succeed on a Dexterity saving throw ( Dc 8 + your proficiency bonus + your proficiency bonus + your constitution modifier)  or take 1d12 fire damage for each of attack you replaced
• You have advantage on saving throws against being charmed or frightened by celestials or fiends

You can assume this form  number of times equal to your proficiency  bonus , an you regain all expended uses when you finish a long rest.

Vassal of Darkness

3rd-level Hellkight feature

When you choose this archetype at 3rd level, you gain dark vision out to a range of 60 feet. While in your diabolic form, the range of 60 feet. While in your diabolic form, the range of your dark vision increases to 120 feet.

Flames of Wrath

7th-level  Hellknight feature

By the time you reach 7th level, the raging inferno of the hells has irreversibly suffused your very essence. You have resistance to fire damage, when you are subjected to fire damage, you can use your reaction to become empowered by its energy for 1 minute.

The next time you hit a target with a weapon attack or deal fire damage to a target while empowered in this way, you release the energy, dealing extra dire damage to it equal to your fighter level. once you use this reaction, you can't do so again until you finish a short or long rest.

 

Devil's Rigor

10th-level Hellknight feature

 

Mind of The Beast

15th-level Rune Knight feature

When you reach 15th level, you learn an ancient fiendish ritual you can perform at the end of a long rest, inscribing an infernal mark upon yourself and up to five other willing creatures of your choice within 30 ft of you. The mark lasts until you finish your next long rest. Each marked creature can understand Infernal, and as long as you are within 120 ft of a marked creature, you can communicate with it telepathically, and vice versa.  

Eternal Hellfire

18th-level Hellknight feature

Beginning at 18th level, you can assume your diabolic form an unlimited number of times, and it only ends if you choose to end it ( no action required) . While in your diabolic form, you  gain the following additional benefits.

• You have immunity to fire damage,  and fire damage you deal ignore s immunity to fire damage, unless the target is a devil.
• You can use a bonus action to cause a weapon you are holding to transform into pure hellfire, which sheds bright light for an additional 30 feet. while transformed, all damage the weapon deals is fire damage. This affect ends if you let go of the weapon.
• You cant be charmed or frightened by celestials or fiends, and you have advantage on saving throws against their own saving throws against their spells and other magical effects
• Whenever you use the reaction granted bu your Flames of Wrath feature, you regain hit points equal to 1d10 + your fighter level , and you can use this reaction even if you're unconscious or otherwise incapacitated.