Bonibel Leiches Herz (boss, finished?)

Clash. Meeting this creatures AC does not hit, nor miss. Bonibel, as well as the opposing side must roll a D20 . Whoever gets a higher roll wins and what they were trying to do will happen. If both parties roll the same, roll again until one side wins.

Skip Step. The first time that Bonibel uses her movement speed in her turn, she teleports to her destination instead. She can only teleport in this manner up to a distance equal to her movement speed.

Manifest Echo. At the start of every round 2 Echos manifest within 30 feet of Bonibel. These Echo's act on Bonibels iniative. Each echo has 1Hp and shares stats with Bonibel. However they are not legendary and do not trigger Distortion stacks.

Echoed Assault. Whenever Bonibel makes an attack roll while she and an Echo are within 5ft of the target, the Echo immediately makes the same attack against the target using the same attack roll.

Living Spellbook. Bonibels spellbook is able to project an astral projection to cast spells from, as well as move up to 30 feet on Bonibels turn. The spellbook can hold multiple concentrations for Bonibel. Has 15 AC and 30Hp. Can cast the shield spell from Bonibels Spellslots

Excitement. Upon reaching half health Bonibel gains the hasted effect

 Nonlethal Spellcaster. Any damage that Bonbiel deals to player characters is considered non-lethal damage.

Multiattack. 

Distorted Rapier. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 4) piercing damage. When dealing damage with this rapier, inflict 1 stack of Distortion. Whenever a creature with distortion takes damage from a weapon attack, suffer 1d4 damage for each stack of Distortion they have. Distortion persists until the creature is attacked by Bonibel

Spellcasting. Bonibel is a 5th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 16, +6 to hit with spell attacks). The Bonibel has following Wizard spells prepared:
Cantrips (at will): Fire Bolt, Ray of Frost
1st level (6 slots): Shield, [Tooltip Not Found]
2nd level (5 slots): Cloud of Daggers
3rd level (4 slots): Fireball, haste , Plane Shift

Swap. Bonibel swaps places with an Echo

Aggressive Parry. In response to a successful attack, Bonibel attacks head on, forcing a clash.

3 legendary actions per round

Silver Barbs (1 Action). You magically distract the triggering creature and turn its momentary uncertainty into encouragement for another creature. The triggering creature must reroll the d20 and use the lower roll.

You can then choose a different creature you can see within range (you can choose yourself). The chosen creature has advantage on the next attack roll, ability check, or saving throw it makes within 1 minute. A creature can be empowered by only one use of this spell at a time.

Counterspell (1 Action). Counterspell

Sacrifice Echo (1 Action). In response to a successful attack, Bonibel can switch places with an Echo.

5 Legendary resistences