Demon Slayer

You have been trained to fight demons and protect those who you love. Through extreme training you were able to connect with the elements of nature to help you on your way to fight and defeat evil hiding in the dark.

Concentration Breathing

To perform breathing forms, you must focus on controling your breath. As a bonus action, you activate your Concentration breathing and hold concentration (as holding concentration for a spell) for up to 1 minute. During this time you can use breathing forms on your turns. It ends early if your concentration breaks.

You can use this feature twice before finishing a short or long rest.

Breathing Technique

Choose one of the five breathing techiques:

• Flame breathing - fire damage
• Water breathing - slashing damage
• Thunder breathing - lightning damage
• Stone breathing - bludgeoning damage
• Wind breathing - cold damage

Your weapon deals elemetal damage coresponding to the technique you chose while holding concentration breathing. This damage is magical.

Flame breathing

Your deal fire damage.

Stone breathing

You deal bludgeoning damage.

Thunder breathing

You deal lightning damage.

Water breathing

You deal slashing damage.

Wind breathing

You deal cold damage.

Fighting style

You learn a fighting style feat. Choose a fighting style feat or Gathering steps available to Demon Slayers.

Fighting style feat

Choose a fighting style feat. You cannot pick a fighting style if you already picked it with another feature.

Gathering steps

When you are attacking with one weapon and no other weapons, your weapon gains the Reach property. The weapon must have the Two-Handed or Versatile property to gain this benefit.

Nichirin Sword

Sword forged from Scarlet ore from the Sunlight mountain.

Reach: 5 ft
Damage: martial art die
Damage type: slashing
Properties: finesse
Weight: 2 lb

• You can use Nichirin sword on attacks when using Furry of Blows.
• You can use breathing techniques only while attacking with a Nichirin sword.

Breathing Forms

You can perform special moves instead of your attack when taking the attack action and deal damage according to your Breathing technique. You know two breathing forms and learn one more at level 5, 7 and 9.

Some breathing forms require you to spend a Focus point to perform the move.
You can also spend Focus points to cause the form to upgrade. You can only upgrade each form once.
If a breathing form requires you to move as part of the form, this movement does not cost you extra movement and does not provoke opportunity attacks, thanks to the swiftness of the move.

At level 11, you can also swap one attack from Furry of Blows for a breathing form (except of 5th form).

Total concentration breathing

Once per concentration breathing, you can use a bonus action to heal yourself equal to two rolls of your martial art die. You also gain proficiency in the medicine skill.

Additionally, you can spend 3 focus points to regain one use of your concentration breathing.

Breathing Technique Mastery

You reach mastery of your breathing technique and gain a special ability:

• Flame: Once per short rest, you can roll the maximum amount of damage on one damage roll.
• Water: You gain resistance to fire and radiant damage.
• Thunder: Your first form deals additional 1d4 lightning damage and can replace all attacks you make (including attacks from Furry of Blows and Opportunity attacks). 
• Stone: You have advantage on saves to maintain your concentration.
• Wind: You don't make any sound when walking, jumping or climbing and gain advantage on stealth checks.

Flame

Once per short rest, you can roll the maximum amount of damage on one damage roll.

Stone

You have advantage on saves to maintain your concentration.

Thunder

Your first form deals additional 1d4 lightning damage and can replace all attacks you make (Including attacks from Furry of Blows and Opportunity attacks). 

Water

You gain resistance to fire and radiant damage.

Wind

You don't make any sound when walking, jumping or climbing and gain advantage on stealth checks.

Mark of the Demon Slayer

Once per long rest, you can activate your Demon slayer mark when activating Concentration breathing for its duration and gain these benefits:

• You can make another attack when taking the attack action.
• Your attacks score a critical hit on a 19 or 20.
• Your movement speed is doubled.
• You gain imunity to the damage of the damage type of your breathing technique.
• Taking damage cannot break your concentration.

Sun Breathing

You learn Sun Breathing and can perform the move using your action once per long rest.

You create a 15ft wide, up to 60ft long line, dashing with the attack without provoking opportunity attack. On a failed dexterity saving throw, you deal 10d12 radiant damage to every creature in the area, or half as much on a succesful save, and light the area in heavenly fire. This fire does not spread and it deals 4d4 radiant damage to every creature who starts its turn in the area or enters it on its turn and fails a constitution saving throw, or half damage on a succesful one. You are imune to this fire. The area is lighten up by sunlight and sheds bright light 10ft away and dim light next 10ft. The fire and light persist until the end of your next turn.
Each creature in the area must succeed on a strenght saving throw or be knocked prone.