Amelia

Composed

Back row

Physical damage

Elves

Support

Satellite Tactical Bombing

Shoots a satellite flare that unleashes a bombardment of lasers, deals AoE Physical Damage, and applies the Electrocution debuff.
Electrocution: Reduces Attack and Movement Speed.
■ Physical DMG: 525%
■ Electrocution Duration: 6s

Superconducting Laser Cannon

Cooldown: 32s
Shoots a state-of-the-art laser cannon, dealing AoE Physical Damage to enemies 6 times. after overheating, deals greater AoE Physical Damage. If Electrocution has been applied on the target, applies Stun.
Stun: Becomes unable to act.
Electrocution: Reduces Attack and Movement Speed.
■ Physical DMG: 126%
■ Physical DMG Overheat: 504%
■ Stun Duration: 3s

Passive

Applies Electrocution on a random enemy within the designated range.
Electrocution: Reduces Attack and Movement Speed.
■ Electrocution Duration: 15.5s
■ Number of Targets Affected: 2
■ Cooldown: 10s

Normal ATK

Shoots a laser and deals AoE Physical Damage to enemies,
■ Physical DMG: 100%
Enhance:
At a set chance, shoots an enhanced laser, deals AoE Physical Damage to enemies, and applies the Electrocution debuff.
Electrocution: Reduces Attack and Movement Speed.
■ Physical DMG: 175%
■ Electrocution Duration: xs

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