The Lord of Blades

Any critical hit against the Lord of Blades becomes a normal hit.

A creature that grapples the Lord of Blades or is grappled by him takes 13 (3d8) slashing damage. A creature takes 13 (3d8) slashing damage if it starts its turn grappling or being grappled by the Lord of Blades.

If the Lord of Blades moves at least 10 feet straight toward a target and then hits it with his adamantine sixblade on the same turn, the target takes an extra 11 (2d10) slashing damage. If the target is a creature, it must succeed on a DC 19 Strength saving throw or be pushed up to 10 feet away and knocked prone.

The Lord of Blades has advantage on saving throws against being poisoned, is immune to disease, and magic can't put him to sleep.

The Lord of Blades is a 20th-level spellcaster. His spellcasting ability is Intelligence (spell save DC 18, +10 to hit with spell attacks). He has the following artificer spells prepared:

Cantrips (at will): fire bolt (see "Actions" below), mage hand, mending, prestidigitation

Level 1 (4 slots): expeditious retreat, sanctuary, thunderwave

Level 2 (3 slots): blur, heat metal, scorching ray, see invisibility

Level 3 (3 slots): dispel magic, fly, haste

Level 4 (3 slots): freedom of movement, Mordenkainen's faithful hound

Level 5 (2 slots): animate objects, wall of force

The Lord of Blades makes three attacks: two with his adamantine sixblade and one with his bladed wings.

Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 21 (3d10 + 5) slashing damage plus 7 (2d6) force damage.

Melee or Ranged Weapon Attack: +11 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 8 (1d6 + 5) slashing damage.

Ranged Spell Attack: +10 to hit, range 120 ft., one target. Hit: 22 (4d10) fire damage.

The Lord of Blades makes one weapon attack.

The Lord of Blades casts one of his cantrips.

The Lord of Blades casts a spell of 2nd level or lower from his spell list that takes 1 action to cast.

The Lord of Blades moves up to his speed without provoking opportunity attacks, then makes one attack with his adamantine sixblade. He can make one bladed wings attack against each creature he moves past.