Haley

Innocence

Middle row

Physical damage

Elves

DPS

Non Grata

At a set chance, whips the enemy 3 times,dealing AoE Physical Damage and applying Stinging.
If the target affected by Stinging, Scorch, or Poison, additionally Damage is dealt based on the number of active Status Effects.
Stinging: reduces Recovery and applies Damage every second.
■ Total Physical Damage: 643.5%
■ Stinging Duration: 5s

Plan B

32 sec Cooldown

Launches a smoke bomb, dealing continuous AoE Physical Damage and applying Blindfold.
Blindfold: Normal Attacks miss.
■ Physical Damage Per Second: 121.8%
■ Physical Damage Duration: 7s
■ Blindfold Duration: 10s

Passive

If the target is affected by Stinging, Scorch, or Poison, additional Damage is dealt based on the number of active Status Effects.
■ Damage Increased: 53%

Normal ATK

Whips enemies, dealing AoE Physical Damage
■ Physical DMG: 85%
Enhance:
Every fourth attack reinforces the whip, increasing Physical ATK and Magical DEF for a set period of time.
■ Physical ATK Increase: 20%
■ Physical ATK Increase Duration: 6s
■ Magical DEF Increase: 40%
■ Magical DEF Increase Duration: 6s

Skill priority

You will level up most skills regardless how useful they are for the combat power padding in endgame. As a general rule of thumb:

Units you are not sure you will use long term: Skills to level 4. If they're passives that benefit the team, can take that to 7.
Strong units but not your main personality: Skills to level 7 for raids and elemental content. Not worth going higher if they are not your main team.
Strong units on your main personality (and waifus): Max out skills. You can start with 7/7/7 and slowly work towards 12/12/12 when you can sweep stage 10.

Recommended artifacts

Artifacts and runes will always change depending on the stage and content you are currently facing, this is just a couple of examples on what items work for this Apostle.

Legendary