Oath of the Forge - ROM

Though their specific Oath and cause may vary, all Paladins who swear an Oath of the Forge uphold the Tenets below: 

Order	Create order from disorder, whether by crafting raw material into works of artistry, or people into community.
Perfection	Always strive for perfection in your chosen craft. The quest for perfection does not end while you draw breath.
Progress	It is your duty to pass your knowledge on to the next generation, and ensure that they will surpass even you.

Level 3: Oath of the Forge Spells

The magic of your oath ensures you always have certain spells ready; when you reach a Paladin level specified in the Oath of the Forge Spells table, you thereafter always have the listed spells prepared.

Oath of the Forge Spells

Paladin Level	Spells
3	Identify, Searing Smite
5	heat metal, magic weapon
9	elemental weapon, protection from energy
13	fabricate, wall of fire
17	animate objects, creation

Level 3: Molten Weapon

When you take the Attack action, you can expend one use of your Channel Divinity to imbue one Melee weapon the power of the Forge. For 1 minute, the weapon deals a bonus 1d6 fire damage on a hit, and when you use Divine Smite with it, the Divine Smite damage becomes fire and you roll d10s in place of the d8s for that damage.

Level 3: Ironworks

As an action, you can touch your holy symbol to a Medium or smaller metal object and instantly transfigure it into a shape of your choosing. To use this Channel Divinity to transfigure the metal into a work that would require skill or training, you must be proficient in the relevant set of artisan's tools.

Level 7: Aura of Iron

The power of your Oath imbues metal weapons and armor of your choice within your Aura of Protection with masterful quality. Armor grants its wearer a +1 bonus to Armor Class, and mundane weapons count as magical weapons.

Level 15: Unwielding Steel

Once per turn when you take damage, you can use your reaction to halve the amount of damage that you would take, so long as you are wearing heavy armor.

You can use this feature a number of times equal to your Charisma modifier (minimum of once), and you regain all uses when you finish a short or long rest.

Level 20: Champion of the Forge

As a bonus action, you can transform into an avatar of forge and fire. While transformed in this way, you gain the benefits listed below:

Aura of Iron grants allied creatures resistance to all bludgeoning, piercing, and slashing damage.

You can use your Unyielding Steel reaction on each of your turns without expending a use of the feature.

When you deal fire damage you ignore resistance to fire damage and treat fire immunity as resistance.

This transformation lasts for 1 minute, but it ends if you are incapacitated. Once you use this feature, you must finish a long rest before you can use it again. When
you have no uses of this feature left, you can expend a spell slot of 5th-level to use this transformation again.