Ninja Art: Spirit Chain

"Through soul and steel, the spirit binds and ensnares. What cannot be touched, the chain shall seize."

Description:
The Spirit Chain is an esoteric ninja art that allows its user to manifest ethereal chains infused with their own spiritual energy. These chains are spectral, able to pass through solid matter and seize incorporeal entities, and are exceptionally versatile. This art is particularly rare, typically taught only to those skilled in binding and control techniques, and is especially effective against elusive foes who rely on speed, magic, or stealth.

Ability Mechanics:

• Manifest Chains: As an action, you summon spectral chains that extend from your hands, reaching up to 20 feet. These chains are semi-physical, appearing as translucent blue or violet, shifting and shimmering in the air. They have multiple uses:

  • Binding an Enemy: You can attempt to bind a single creature within range. Roll a contested Strength (Athletics) check or Dexterity (Acrobatics) check (your choice) against the target’s Strength (Athletics) or Dexterity (Acrobatics). On a success, the target is restrained, wrapped in ghostly chains for up to 1 minute. The target can use its action to attempt to break free by succeeding on another contested roll.
  • Chain Leap: You can use the chains to pull yourself toward a solid surface or anchor point within 20 feet, effectively launching yourself as if by a grappling hook. This does not consume movement but requires a bonus action.
  • Soul Bind: The chains are capable of restraining incorporeal or ethereal beings, such as spirits, ghosts, and other non-physical entities. Against such creatures, your Spirit Chains deal 2d6 force damage per turn they remain restrained.

• Damage Resistance: While you are using the Spirit Chain, you have resistance to non-magical bludgeoning, piercing, and slashing damage as the chains subtly protect you, wrapping around you defensively when not in active use.

• Duration & Uses: This ability can be activated twice per long rest, and each activation lasts up to 1 minute or until the chains are dismissed.

• Chain Degradation: Prolonged use of the Spirit Chain slowly wears on the user’s stamina. After using the chains, roll a d20; on a result of 5 or lower, you suffer one level of exhaustion. This reflects the toll the art takes on your spirit, and ninjas using this technique must carefully manage their energy in prolonged battles.

Visual & Sensory Effects:

• Appearance: The chains appear ethereal, shimmering and shifting like spectral wisps, occasionally glinting with streaks of pale light. When binding an enemy, they tighten and glow with a soft but ominous radiance.
• Sound: The chains emit a faint, ghostly hum, and as they tighten around a target, there is a quiet clinking like metal under tension.
• Feel: Enemies bound by the chains feel a deep chill, as if an unnatural cold is seeping into their bones, making movement more difficult.

Lore:
Spirit Chain is a technique passed down among ninja mystics and those trained in exorcism arts. It was originally developed as a means of subduing rogue spirits and other supernatural threats, a bridge between the physical and spiritual realms. Those who use it are viewed with reverence, but also fear, as this art touches realms beyond mortal understanding. Legends warn that these chains have a hunger of their own, sometimes binding not just bodies, but souls—a caution for any user who relies too heavily on this powerful art.