champions of the dragons

 Raised under the guidance of dragons, you were chosen to serve as their champion. Everything you know from combat and magic to how to talk and behave was taught by them. In battle, you channel draconic Power into your weapons, using their energy in your fights to achieve the goals of the dragons who raised you.

 

spell casting

Level 3: Spellcasting

Spending years of your life with magical creatures, you learned some tricks to use in a fight.
The champion has these spells prepared and can use them while expanding the amount o spell slots you have varies on level, this is the full list

Fighter Level	Draconic Energy	Spells Unlocked	Spell Slots Available
3rd	3	Divine Favor (1st), Flame Blade (2nd)	1 (1st level), 1 (2nd level)
5th	5	Magic Weapon (2nd)	2 (1st level), 1 (2nd level)
7th	7	Crusader's Mantle (3rd), Elemental Weapon (3rd)	3 (1st), 2 (2nd), 1 (3rd level)
9th	7	Fire Shield (4th)	4 (1st), 3 (2nd), 2 (3rd), 1 (4th level)
11th	9	Freedom of Movement (4th)	4 (1st), 3 (2nd), 3 (3rd), 2 (4th level)
13th	11	Holy Weapon (5th)	4 (1st), 3 (2nd), 3 (3rd), 2 (4th), 1 (5th level)
15th	11	Far Step (5th)	4 (1st), 3 (2nd), 3 (3rd), 3 (4th), 2 (5th level)
17th	13	Tasha's Otherworldly Guise (6th)	4 (1st), 3 (2nd), 3 (3rd), 3 (4th), 2 (5th), 1 (6th level)

Level 3: better flame blade

whenever you cast flame blade, you can use your attack action to attack with the blade, instead of a magic action. 
additionally, u can change the damage type of the flame blade from fire to your draconic energy type(depending on the type of dragon which raised you)

level 3: fast casting

whenever you cast a spell from this subclass, you use your dexterity bonus or strength bonus, this means that for spell attack rolls, you add str/dex + proficiency bonus.
and your spell save dc is calculated like this: 8+ str/dex + proficiency bonus.

Level 3: draconic intuition

Your education under dragons taught you more than just fighting. You gain proficiency in the Arcana or History skill (your choice), and you learn to speak, read, and write Draconic.

Level 3: draconic energy points

you start feeling the energy of the dragons manifest in you starting at 3rd level, u gain draconic energy that fuels your powers from the list given in the spellcasting section of this subclass

most features of this subclass use draconic energy, and you cannot use any of them if you ran out of draconic energy points, whenever you finish a short rest, you regain the amount of expended draconic energy equal to your proficiency bonus and whenever you finish a long rest you regain all expended draconic energy.

Level 3: draconic infusion(cost- 1 energy)

As a bonus action, you can expend 1 Draconic Energy point to coat your weapon in elemental power. For the next 1 minute, your weapon attacks deal an extra 1d4 damage. The damage type matches the dragon type that raised you (Fire, Cold, Lightning, Acid, or Poison).

Level 5: scale growth(cost- 2 energy)

When a creature hits you with an attack, you can use your reaction and expend 2 Draconic Energy point to manifest hard, glowing dragon scales over your armor. You gain a +3 bonus to your AC against that attack, potentially causing it to miss.

Level 5: Elemental breathing(cost- 0 energy, max 2 uses a long rest)

you can use your breathing techniques to stabilize your heart rate, as an action you can take a deep breath and heal yourself for 2d6+ half your fighter level (round down) HP and gain 2 temporary hit points.
this action can only be used 2 times each long rest.

Level 7: Tail sweep(cost- 2 energy)

When a creature moves into a space within 5 feet of you, you can use your reaction o to expend 2 Draconic Energy point and unleash a spectral tail sweep.
The target must make a Strength saving throw (DC = 8 + proficiency + Strength or Dexterity modifier). On a failure, the target is knocked prone or pushed up to 10 feet away from you (your choice).

Level 7: draconic roar(cost- 4 energy)

use your booming voice to scream loudly and damage all people around you.
on your turn, you can use your action to damage all enemies in a 15 foot radius from you, any one in range must roll a constitution saving throw against your spell save dc.
On a failed save: A creature takes 4d8 damage and is knocked prone. The damage type matches the dragon type that raised you (Fire, Cold, Lightning, Acid, or Poison).
On a successful save: A creature takes half as much damage and is not knocked prone.

Level 10: Fast recovery

Whenever you sleep a short rest, you dont get draconic energy equal to your proficiency level, but instead you gain an additional 2 from before. (Your proficiency bonus + 2)

level 15: draconic dash(cost- 3 energy)

As a bonus action, you can expend 3 Draconic Energy points to charge forward in a straight line up to your movement speed. During this charge, you can move through enemy spaces, and you do not provoke opportunity attacks
Each creature you pass through must make a Strength saving throw against your spell save DC.
On a failure: A creature takes 4d10 bludgeoning damage, is knocked prone, and has its reaction spent for the round as you trample over them.
On a success: It takes half damage and is pushed 5 feet out of your path.

 

Level 18: mythic attack: pure draconic energy(cost- 11 energy)

You summon a colossal, manifestation of a dragon's head over your weapon, snapping shut on a target to erase them from existence.

When you hit a creature with a weapon attack, you can expend 11 Draconic Energy points to trigger a Mythic Execute.
your attack automatically becomes a crit and gets an additional 10d10 damage of any elemental type.
if this attack reduces the creature affected by it to less then 15% of its hp, the target automatically goes down to 0 hp, and you get back 3 draconic energy points from their life.