Base Class: Fighter
Warriors trained in eradicating the undead and the fiendish. Demon Slayers are those who are guided by their own morals and determination. These fighters are known for their varying skills in which they use to slay their targets.
Breathing Style
Beginning at 3rd level, you can choose one breathing style of your choice and gain specific benefits based on your chosen style. Breathing styles can be combined and or used with only one action at the same time.
- Breath of Water. When you make an attack you automatically go through the enemies AC. All your attacks deal cold damage.
- Breath of Flame. All your attacks light enemies on fire dealing 1d4 every turn unless they use an action to douse it. All your attacks deal fire damage.
- Breath of Thunder. Your speed is increased by 10 feet and all your attacks deal lightning damage.
- Breath of Stone. When your using this form your strength modifier is automatically +5. All your attacks deal force damage.
- Breath of Wind. You no longer take fall damage and have a flight speed of 15 feet. All your attacks deal thunder damage.
- Breath of Moon. Your attacks range is increased by 5 feet and your attacks all deal necrotic damage.
- Breath of Sun. Whenever you deal damage you heal half as much damage dealt and your attacks all deal radiant damage. Additionally once when you receive a fatal blow you can come back to life with half health (rounded down), you can do this once per short rest.
Demon Hunter
At 3rd level, your training has lead you being capable of detecting the undead and fiendish presence.
As an action, you can open you awareness to magically detect undead and fiends. Until the end of your next turn, you know the location of any undead or fiend within 100 feet of you that isn't behind total cover and that isn't protected from Divination magic. This sense doesn't tell you about a creature's capabilities or identity.
In addition, you can cast the protection from evil and good spell once without material components yourself. Once you use either feature, you can't do so again until you have finished a long rest.
Finally you also gain improved senses, you may choose one sense to have improved these may be; Sight, Smell or Hearing. You may use any of these to see, smell or hear up to 100 feet perfectly unless interrupted by magic.
Concentration Breathing Constant
At 7th level, you gain advantage on all athletics, acrobatics, survival and performance checks.
Additionally you now gain the base form of a new breathing style of your choice.
Additionally you also regain 1d4 hit points after every round.
Advanced Breathing Style
At 7th level, your training grants you the ability to perform advanced techniques based on your chosen style.
- Breath of Water. When you would take damage from a weapon attack, you can reduce the damage dealt by a number equal to your proficiency modifier.
- Breath of Flame. The first time you hit with a melee weapon attack each turn, you and allies within 5 feet of you gain temporary hit points equal to you proficiency modifier.
- Breath of Thunder. You're speed goes up by 10, the dash action can be used as a bonus action and the dash action goes double your speed.
- Breath of Stone. When you attack you can combine all of your fighter actions and bonus actions to deal double damage.
- Breath of Wind. After every attack your enemies speed is decreased by 10 until your next turn.
- Breath of Moon. Using an action you can shoot out 6 crescent moon blades from your sword dealing 1d6 damage each these can all be directed at different enemies.
- Breath of Sun. Using an action on your first attack you can summon a Sun dragon and attack with it this dragon deals an additional 2d8 damage and lasts until the end of your turn.
Demon Destroyer
Starting at 10th level, you're capable of eliminating minor foes in near instants. Your melee weapons attacks all count as magical.
In addition, undead or fiends (CR 5) are instantly destroyed by your melee attacks. The CR limit increases by 1 for every 2 fighter levels above 10th level.
Demon Slayer Mark
At 10th level, you can awaken your Demon Slayer Mark this allows you to push the boundary of what you were previously capable you now have advantage on all saving throws and after every hit and enemy cannot heal for 3 rounds (Stackable).
Additionally any enemy that sees you with a Demon Slayer Mark that is under a CR of 5 will be frightened of you for 1 round.
Additionally reactions can be used when something enters or leaves your zone and you do not invoke opportunity attacks leaving an enemies zone.
Perfected Breathing Style
At 15th level, your training grants you the ability to perform advanced techniques based on your chosen style.
Additionally you can now learn the advanced version of the second breathing style that you previously chose in Concentration Breathing Constant or a new basic version of a breathing style.
- Breath of Water. You gain access to the form Dead Calm, using this with an action you reduces your speed to 0 but grain an extra 10 AC for 3 rounds.
- Breath of Flame. You gain access to Underworld Eruption, using this deals 2d6 damage to all hostile foes and knocks them prone for 3 rounds.
- Breath of Thunder. You gain access to Godspeed level of Thunderclap and Flash, your speed now doubles and you can attack twice per every action.
- Breath of Stone. You gain access to the form Stone Skin, using this as an action you can add a 5 to your AC or your damage modifier you can change back and forth at will with a bonus action this lasts 3 rounds.
- Breath of Wind. You gain access to Idaten Typhoon, when you use this as an action you create a tornado on your enemy. The enemy instantly takes 2d6 damage and takes 1d6 damage every turn thereafter. The tornado has a range of 30 feet by 30 feet and only harms enemies.
- Breath of Moon. You gain access to the form Moonbow, Half Moon, using this with an action you fire a single moon arrow from the tip of your blade with a range of 120 feet, this arrow can be controlled with your mind, does 2d10 necrotic damage and gives the exhaustion effect for 2 rounds.
- Breath of Sun. You gain access to the legendary thirteenth form, using this you deal 4d12 radiant damage and give the blinded effect for 2 rounds.
Translucent World
At 18th level, you unlock the ability to have true sight granting you advantage on all attacks.
Additionally you can now see in any darkness be it magical or non-magical as if it where normal light.
Perfect Form
At 20th, level you have perfected the art of killing demons. After every attack you roll a dice if it's over 16 you attack again without needing an action, however every attack in a row increases the number needed to roll by 2 using this methode. The only modifier you add to the succession roll is your performance modifier.
Additionally every time you roll over a 20 to hit you can treat it as a natural 20. If the enemy has an AC above twenty and you originally hit, you still treat it as a nat 20 and hit anyway.