Intent. The wind guides Yone's blade. Yone's melee attacks critically strike on rolls of 15-20. Additionally, Yone heals for 50% of the damage he deals.

Steel and Spirit. Yone wields two blades - a perfected steel Katana, and a sword taken from a demonic Azakana. Yone's Multiattack action features both of these weapons.

Multiattack. Yone strikes once with his katana, once with the azakana blade, and uses Mortal Steel.

Katana. Melee Weapon Attack: +17 to hit, reach 5 ft., 1 target. Hit: 8 (1d6 + 5) slashing damage.

Azakana Blade. Melee Weapon Attack: +17 to hit, reach 5 ft., 1 target. Hit: 3 (1d4 + 1) slashing damage and 3 (1d4 +1) necrotic damage.

Mortal Steel. Melee or Ranged Weapon Attack. Yone stabs in a line, with the wind propelling his blade. All creatures within a 10 foot line must make a DC 16 Dexterity saving throw or take 7 (1d8 + 3) piercing damage. If this attack hits at least one enemy, Yone gains a stack. At two stacks, Yone instead dashes 15 feet in a direction of his choice, and emits a 15 by 30 foot shockwave in a line following the same direction as his dash. All creatures in the line must make the same saving throw, and if they fail take 11 (1d10 + 6) bludgeoning damage and be sent airborne 5 feet upwards. Airborne creatures are stunned until the start of their next turn.

Spirit Cleave (Recharge 3-6). Melee Weapon Attack. Yone sweeps a 10 by 15 foot cone in front of him with the azakana blade. Creatures in the cone must make a DC 14 Dexterity saving throw. On a failed save, creatures take 2 (1d4) slashing damage and 2 (1d4) necrotic damage, or half as much on a successful save. If any creatures fail their save, Yone gains 18 (3d12) temporary hitpoints.

Spirit Unbound (Recharge 4-6). Yone temporarily discards his body and enters a spirit form, granting him an additional 20 feet of movement speed until the end of his next turn or when he chooses to return to his body. Yone's body cannot be damaged until the end of this effect, but his spirit can be and when this effect ends his body receives the same damage his spirit took. When this effect ends, Yone instantly moves back to the location of his body. Yone can return to his body to automatically succeed any Dexterity saving throws.

Fate Sealed (Once per Long Rest). Yone dashes in a 10 by 50 foot line, striking each target and pulling them to the end of the line. Creatures in the line must make a DC 16 Dexterity saving throw. On a failed save, they take 18 (5d6) slashing damage or half as much on a successful save. All creatures hit by the line are stunned until the start of their next turn.