Nimbleness. The vivisectionist has advantage on any Strength (Athletics) or Dexterity (Acrobatics) check it makes to escape from being grappled.

Smart Attack. Once per turn when the vivisectionist damages a creature with a weapon attack, it takes an additional 3d6 damage.

Periapt of Wound Closure. The vivisectionist stabilizes whenever it is dying at the start of its turn. In addition, whenever it rolls a Hit Die to regain hit points, double the number of hit points it restores.

Swift Incisions. Once per turn when the vivisectionist hits a creature with a melee weapon that deals piercing or slashing damage, it can cause one of the following effects:

• The target cannot take reactions until the start of the vivisectionist's next turn.
• The target must make a Dexterity saving throw against the vivisectionist's spell save DC. On a failure its speed is halved until the end of it's next turn.
•  The target takes 1d8 + 5 necrotic damage at the end of its next turn as it bleeds profusely.

Spellcasting. The vivisectionist is a 10th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +11 to hit with spell attacks). The vivisectionist has the following artificer spells prepared:

Cantrips (at will): green-flame blade, mage hand, resistance

1st level (4 slots): wrathful smite, inflict wounds, catapult, false life, grease, snare

2nd level (3 slots): alter self, enlarge/reduce, web, cloud of daggers, summon beast

3rd level (2 slots): dispel magic, intellect fortress, revivify, blinding smite, feign death

Multiattack. The vivisectionist makes two melee attacks.

Returning Machete. Melee or Ranged Weapon Attack: +10 to hit, reach 5 ft. or range 20/60 ft., one creature. Hit: 11 (1d8 + 6) piercing damage.

Boots of the Winding Path. As a bonus action, the vivisectionist can teleport up to 15 feet, to an unoccupied space you can see. It must have occupied that space at some point during the current turn.

Magical Tinkering. The vivisectionist can imbue a Tiny nonmagical object with a magical property of its choice: 5ft. radius light, up to 6 second long recorded message, emits odor or nonverbal sound, static visual effect including up to 25 words of text. It can affect a maximum of 5 objects at a time.

Flash of Genius. When the vivisectionist or another creature it can see within 30 feet of it makes an ability check or a saving throw, it can use a reaction to add a +5 bonus to the roll.