Rim

Depressed

Front row

Physical damage

Phantoms

DPS

Side Slash

Darkness descends and restores HP. Unleashes a slash attack that deals AoE Physical Damage to enemies, inflicting Stinging and Knockback.
Sting: Reduces Recovery Rate and Applies Damage every second.
Knockback: Is pushed back, becoming unable to act.
■ HP recovery: 21.5% of Max HP
■ Physical DMG: 580%
■ Stinging Duration: 10s

Grim Reaper

Cooldown: 56
Unleashes a slash attack by unlocking the Grim Reaper's power, dealing AoE Physical Damage to enemies and Knocking them back. Additionally recovers own HP.
Knockback: Is pushed back, becoming unable to act.
■ Physical DMG: 730%
■ Final Hit Physical DMG: 930%
■ HP Recovery: 250% of DMG Dealt by the Final Hit

Passive

When defeating an enemy with Direct Damage, recovers own HP.
Direct Damage: Refers to damage caused by Direct Attacks, excluding Status Effect Damage and Damage Reflection.
■ HP Recovery: 21.5% of Max HP

Normal ATK

At a set chance, swings her scythe at the enemies, dealing AoE Physical Damage and applying Stinging.
Stinging: Reduces Recovery Rate and applies Damage every second.
■ Physical Damage: 100%
■ Stinging Duration: 2s

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