The Unique Worlds Class for Dungeons & Dragons (D&D) Fifth Edition (5e)

Base Class: Fighter

3rd Level — Unique World

Your soul harbors a Unique World, an inner plane that mirrors your ideals and essence. You can manifest fragments of this world in battle.

Unique Domain: Choose a theme for your Unique World (e.g., burning skies, frozen silence, endless battlefield, infinite ocean). When you use an ability from this subclass, describe how the manifestation reflects your Domain.
World Shard: As a bonus action, you can call forth a "World Shard," a 15-foot radius aura centered on yourself that lasts for 1 minute or until you are incapacitated.
While inside your World Shard:
- You and allies gain temporary hit points equal to your Fighter level at the start of their turns.
- Enemies have disadvantage on Opportunity Attacks against creatures inside the Shard.
You can use this feature a number of times equal to your proficiency bonus, regaining all uses after a long rest.

Your attacks carry the authority of your Unique World.

Once per turn when you hit with a weapon attack, you can deal extra damage equal to your Fighter level and impose a special effect based on your Domain:
- Burning Skies: Target takes ongoing fire damage (1d6) until it uses an action to extinguish it.
- Frozen Silence: Target’s movement speed is reduced by 10 feet until the end of its next turn.
- Endless Battlefield: Target has disadvantage on its next attack roll.
- Infinite Ocean: You push the target 10 feet away from you.

You can customize your own Domain Effects with your DM's approval.

You and your Unique World grow harder to suppress.

You gain advantage on saving throws against being frightened, charmed, or stunned.
When you are reduced to 0 hit points but not killed outright, you can instead drop to 1 hit point and immediately expand your World Shard (if it’s not already active) without expending a use.

You can use this feature once per long rest.

Your will overflows, shaking the battlefield.

As an action, you unleash a burst of your Unique World. Each enemy within 30 feet must succeed on a Strength saving throw (DC = 8 + your proficiency bonus + your Strength or Dexterity modifier) or be knocked prone and take force damage equal to 2d8 + your Fighter level. On a success, they take half damage and are not knocked prone.
Allies within the radius can immediately move up to half their movement without provoking opportunity attacks.

You can use this feature once, regaining it after a short or long rest.

Your Unique World actively shields you and your allies.

When an ally within your World Shard takes damage, you can use your reaction to reduce the damage by an amount equal to 2d10 + your Fighter level.
If this reduces the damage to 0, you can immediately make one weapon attack against the attacker as part of the same reaction.

At the pinnacle of your strength, you momentarily impose your Unique World entirely upon reality.

As an action, you unleash the full force of your World.
- For 1 minute, your World Shard becomes a 60-foot radius, and while inside it:
  - You and your allies have resistance to all damage.
  - Enemies have disadvantage on all attack rolls and saving throws.
  - Your Domain Strike applies on every weapon hit, not just once per turn.

Once you use Sovereign Overwrite, you must finish two long rest before using it again.

Unique Domain: Choose a theme for your Unique World (e.g., burning skies, frozen silence, endless battlefield, infinite ocean). When you use an ability from this subclass, describe how the manifestation reflects your Domain.
World Shard: As a bonus action, you can call forth a "World Shard," a 15-foot radius aura centered on yourself that lasts for 1 minute or until you are incapacitated.
While inside your World Shard:
- You and allies gain temporary hit points equal to your Fighter level at the start of their turns.
- Enemies have disadvantage on Opportunity Attacks against creatures inside the Shard.
You can use this feature a number of times equal to your proficiency bonus, regaining all uses after a long rest.