Mist - Priorité / Boss clearing

A few days ago I had to farm a lot of stardust to unlock constellations for other travelers the process takes a long time but running Mist with Priorité makes the run much faster, and it's satisfying to run at supersonic speed towards enemies and make them disappear just as quickly.

==== # Build explanation # ====

Mist's second passive, Astrid's Masterpiece - Priorité, applies a mark to a random enemy. Hitting the marked enemy deals additional physical damage.
Since Mist already has a pretty good base AD of 51, we can use this to slice through bosses in a few seconds.

We will use Flèche which is by far stronger than Lunge and try to inflict 6 instances of damage as quickly as possible to trigger the passive explosion. For essences we have a lot of choices but here we will go for Essence of Clemency as Déjà Vu, our goal is to keep our health higher as possible and make use of our constellations. Essence of Obsidian will help us reduce the cooldown of our memory while dealing dark damage at the same time. Essence of Predation is not mandatory but insanely strong for boss nuking.

Unbreakable Determination is used as an emergency healing tool and map clearing tool since it applies area of effect damage while also increasing Mist's attack speed,

Arrow Storm is a really strong memory, it is not mandatory but will help us attack faster and summon projectiles to deal more damage. It also stacks with Essence of Momentum but if you ever manage to find it, place it on Flèche instead.

Vile Strike is purely use to reach enemies faster and act as teleportation / dodge tool, it can be replaced by Hemorrhage to apply strong dot on bosses, Shadow Walk for additional dash or Blade Storm to clear rooms faster.

==== # Constellations # ====

Destruction

Strike the Weakness to increase our base attack damage and critical chance.
Gathering Storm will help us get more attack speed as we level up and initial speed reduction can easily fixed with Essence of Wind.
Corrupted Mind is used to take advantage of Essence of Obsidian and can synergize well with Umbral Edge for more critical chance.
Duelist's Focus and Valiant Challenger will help us deal quickly with bosses and will boost the damage of Mist's passive.
Ultimate Malice to refill Unbreakable Determination faster and help clearing rooms faster.

Life

Regenerative Skin and Asclepius are used to keep our health above 90% as much as possible.
Plate Pauldrons is overlooked but really good since we're not using Astrid's Masterpiece - En Garde and can have our health take some hits.
Threat Detection and Light Armament for dashes, simply rushing enemies and try dodging as much as possible.

Imagination

Beginner's Luck like any other build, this is mandatory. 230% quality on Obsidian is really strong.
Intersecting Memories is optionnal but nice to have for early dream dust or if you manage to get a good memory.
Primordial Chaos nice to have, it will help us get more stats as we defeat bosses.

Flexible

Lightning Breath is a crucial star for this build making Flèche a teleportation memory instead of a dash, the damage is converted to light and we're dealing additional dark damage with Obsidian.
Coup de Grâce is great for room clearing and can synergize really well with Essence of Pain.
Two Hearts for instant healing in case of emergency.
Dismantle and Analyze not mandatory but useful to quickly level up Flèche, Obsidian or Priorité.