Spectre makes one melee attack against every creature within 5 feet, using a separate attack roll for each target.

Spectre enters a heightened autonomous state, gaining enhanced defenses, doubled speed, four attacks, four Flurry of Blows strikes, and reality-defying reflexes.

Spectre's body becomes extremely resilient. He can use an action to end one effect causing him to be charmed or frightened. He also gains resistance to disease and poison damage and immunity to poison and disease.

Spectre gains one additional attack when he takes the Attack action and one additional Flurry of Blows strike. He can use an action to make one melee attack against every creature within 5 feet of him, with a separate attack roll for each target.

Spectre makes two unarmed strikes as a bonus action after taking the Attack action with an unarmed strike or monk weapon. With Flurry of Blows, he makes four unarmed strikes. Under Fluid Focus, Flurry of Blows makes four strikes without ki.

Spectre Dodges as a bonus action. When amplified with 1 ki, creatures that miss him while this defense is active become vulnerable to his reactive counterattacks.

Spectre Dashes or Disengages as a bonus action. When amplified with 1 ki, his speed doubles and his jump distance triples.

Spectre's unarmed strikes use martial arts techniques. He can use Dexterity instead of Strength for unarmed strikes and monk weapons, roll a d8 for his Martial Arts die, and make one unarmed strike as a bonus action after attacking with an unarmed strike or monk weapon.

Spectre can use a bonus action to make two unarmed strikes, or three unarmed strikes when using Flurry of Blows. He can spend 1 ki to make the Flurry attacks with advantage. Flurry of Blows no longer normally requires ki.

Spectre gains the ability to step into the Border Ethereal as an action by spending 4 ki, remaining there for up to 1 minute or until he ends the effect as a bonus action.

Spectre reduces ranged weapon damage by 1d10 + 40 and can catch the projectile if the damage becomes 0. In Fluid Focus, this requires no action.

Spectre returns from death by making a Constitution saving throw, recovering hit points equal to 25 plus 12 per ki spent on a success.

Spectre attempts to stun a creature hit by a melee weapon attack. The target makes a DC 19 Constitution saving throw.

Spectre's unarmored movement increases by 30 feet. His walking speed is 60 feet while unarmored.

Spectre can slow his fall and reduce falling damage by 100 points when he falls.

Spectre can make an additional attack whenever he takes the Attack action. His Martial Arts die becomes a d6 at this level, though his custom training later improves its practical impact through additional attacks.

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

Spectre can enter a meditative state for 1 minute, gaining proficiency in all saving throws. If he already has proficiency, he instead adds his proficiency bonus again. He can spend 1 ki to reroll a failed saving throw.

Spectre's unarmed strikes count as magical. He also gains the ability to understand all spoken languages and can make himself understood by any creature that understands a language.

Spectre no longer ages, requires no food or water, and cannot be magically aged. He also no longer suffers the frailty of old age and cannot die from it.

When Spectre reaches 0 hit points or is subjected to an effect that would kill him instantly, he makes a Constitution saving throw with a DC of 10 plus the number of times he has been dropped to 0 hit points. On a success, he regains hit points equal to his monk level plus his Constitution modifier plus 12 hit points per ki spent. On a failure, he may still revive by expending all remaining ki. If he has no ki or refuses to revive, the effect resolves normally.

Flurry of Blows, Patient Defense, and Step of the Wind require no ki. Spectre can amplify Flurry of Blows with 1 ki for advantage, Patient Defense with 1 ki for reactive counterattacks against attackers who miss, and Step of the Wind with 1 ki for doubled speed and triple jump distance.

Spectre knows the secret patterns and hidden paths of cities. He can find routes through urban environments that others overlook, and he can secure simple shelter for himself and companions among the poor, abandoned, or forgotten.