Hello people of the internet,

I am a big fan of Rave Master so I tried to make it a fighter subclass. I am currently playtesting it and so far it feels fine at 6th level. Below is all the martial arcthype information. If you can think of anyway that it is too strong or too weak please let me know.

Thanks in advance,

Nerd

This is a homebrew Martial Archetype for the Fighter Class.

Rave Knight
When you take this Martial Archetype at 3rd Level you lose proficiency with any weapon other
than the Eisenmeteor a very special Greatsword and 5 stones that will become usable at each
Martial Archetype Feature. Switching Eisenmeteor into a different form uses a bonus action and
each form can only be used once every long rest. This weapon also counts as a magical
weapon

EXPLOSION (form 1)
At 3rd level you gain the ability to alter your Rave Sword to its first form EXPLOSION. When this
sword hits anything it creates an explosion dealing 2d4 fire damage and the regular damage
becomes bludgeoning. The fire damages increases to 3D4 at 7th level and 4D4 at 15th level

Silfarion (form 2)
At 7th level you gain access to the second form Silfarion. While your sword is in this form your
movement speed is doubled and you have proficiency in Dexterity Saving throws.

Rune Save (form 3)
At 7th level you gain access to the third form Rune Save. While in this form you can block one
spell cast at you as a reaction. On your next attack you deal an extra 2d8 of damage (the type
of damage depends on the spell that was blocked)

Blue Crimson (form 4)
At 10th level you gain access to the fourth form Blue Crimson. The Rune Sword splits into two
shortswords. One of them turns blue dealing an extra 2d6 cold damage. The other turns red
dealing an extra 2d6 fire damage. You attack with each blade whenever taking the Attack action
and suffer no penalties from dual wielding.

Zephyr Force (form 5)
At 10th level you gain access to the fifth form Zephyr Force. While in this form you can choose
between two options after successfully hitting a target:
- You deal an extra 2d10 force damage and knock the target back 10 feet
- You make the target roll a Constitution saving throw vs your proficiency + 8 + Strength
Mod. On a fail the target is Stunned until your next turn.

Gravity Core (form 6)
At 15th level you gain access to the sixth form Gravity Core. While in this form the base damage
of your Rave Sword is doubled. This form must be used with both hands and your movement
goes down 15 ft.

Million Suns (form 7)
At 15th level you gain access to the seventh form Million Suns. While in this form the sword
shines bright with radiant energy to completely illuminate any darkness. This form also deals an
extra 3d10 radiant damage with each hit.

Sacrifar (form 8)
At 18th level you gain access to the eighth form Sacrifar. This form feeds on every emotion but
anger causing you to go into a frenzy. When you use the Attack action with this sword you
attack any creature within 5 feet of you. This form deals an extra 3d10 necrotic damage. You
are no longer able to tell friends from foe for 3 rounds.

(Player named Sword)
At 18th level you gain access to the final form of Eisenmeteor. You will bestow this sword with a
name of your choice and may provide the DM with a sketch of the swords design. It must be a
single sword. This new weapon becomes the default form of your Eisenmeteor. Switching to
different forms after this point will not require any sort of action as you have mastered its power.
This sword deals 2d10 base slashing damage.