Spend 4 ki points as an action to become invisible for 1 minute and gain resistance to all damage except force damage.

Spectre can end one effect on himself causing him to be charmed or frightened as an action. Starting at this level, he can also use Stillness of Mind to end one such effect on himself as an action.

Spectre can become immune to disease and poison by spending 1 ki point as an action for 1 hour.

Spectre can heal himself for 60 hit points as an action. He cannot use this feature on an undead or construct, and he cannot use it again until he finishes a long rest.

Spend 1 ki point to make two unarmed strikes as a bonus action after taking the Attack action.

Spend 1 ki point to take the Dodge action as a bonus action.

Spend 1 ki point to Dash or Disengage as a bonus action, with doubled jump distance.

Spectre gains proficiency with simple weapons, shortswords, and unarmed strikes. His martial arts training allows him to use Dexterity instead of Strength for unarmed strikes and monk weapons, roll a d10 for his Martial Arts die, and make one unarmed strike as a bonus action after taking the Attack action with an unarmed strike or monk weapon.

Spectre can spend 1 ki point to make two unarmed strikes as a bonus action after taking the Attack action, spend 1 ki point to take the Dodge action as a bonus action, or spend 1 ki point to take the Dash or Disengage action as a bonus action, with doubled jump distance when using Step of the Wind.

When Spectre hits with a melee weapon attack, spend 1 ki point. The target makes a DC 19 Constitution saving throw or becomes stunned until the end of Spectre's next turn.

Use after Flurry of Blows hits. Each target can be knocked prone, pushed up to 15 feet, or prevented from taking reactions until the end of Spectre's next turn.

Spectre gains proficiency with Strength and Dexterity saving throws.

Spectre gains a pool of 20 ki points. His ki save DC is 19. Ki fuels Flurry of Blows, Patient Defense, Step of the Wind, Stunning Strike, and other monk features.

Spectre's unarmored speed increases by 10 feet. He can also run along vertical surfaces and across liquids during his movement without falling during that movement.

Spectre deflects missiles when hit by a ranged weapon attack, reducing the damage by 1d10 + 25. If the damage is reduced to 0, he can catch the missile. By spending 1 ki point, he can make a ranged attack with the caught missile.

Spectre chooses the Way of the Open Hand, mastering the techniques of unarmed combat.

Spectre can slow his fall and reduce falling damage by 100 points when within reach of a vertical surface.

Spectre gains an additional attack whenever he takes the Attack action on his turn.

Spectre's unarmored movement bonus increases to 15 feet. He can move along vertical surfaces and across liquids without falling during the movement.

Spectre's unarmed strikes count as magical for overcoming resistance and immunity to nonmagical attacks and damage.

Spectre can evade area effects such as a red dragon's breath. On a successful Dexterity saving throw for half damage, he takes no damage, and on a failed save, he takes half damage.

Spectre's unarmored movement bonus increases to 20 feet.

Spectre can understand all spoken languages and make himself understood by any creature that understands a language.

Spectre's unarmored movement bonus increases to 25 feet.

Spectre gains proficiency in all saving throws. Additionally, when he fails a saving throw, he can spend 1 ki point to reroll it and must use the new result.

Spectre's unarmed movement bonus increases to 30 feet.

Spectre regains 4 expended ki points when he rolls initiative if he has no ki points remaining.

Spectre can attempt to set up lethal vibrations in a creature's body by touching it and spending 3 ki points. The target must make a DC 19 Constitution saving throw. On a failure, it is reduced to 0 hit points after 17 days unless the vibrations are ended, and on a success it takes 10d10 necrotic damage instead. The effect can be ended by Spectre or by a greater restoration, heal, or wish spell.

Spectre knows the secret patterns and shortcuts of the city. He can move through urban environments at twice the normal speed when not in combat, and he can find passages through cities that others would miss. He also remembers the layout of places he has lived or traveled through.