Naia

Innocence

Middle row

Magic damage

Elementals

Support Tier 2

You Call That Washing?!

Cleanses with Water Stream to recover the HP of the ally with the lowest remaining HP Ratio 20 times and removes Status Effects. Can switch the recovering ally once during skill casting.
■ HP Recovery Per Use: 15% of the target's Max HP + 21% of own ATK

Accept the Baptism of Water!

26 sec Cooldown

Summons an advancing wave. The wave recovers allies and deals Damage to enemies.
■ HP Recovery: 32% of the target's Max HP
■ Magical DMG: 756%

Passive

Reduces Cooldown for Senior Skills.
■ Cooldown Reduction: 6.5s

Normal ATK

Fires her water gun and deals damage to the enemy.
■ Magical DMG: 45%
Enhance:
At a set chance, fires her water gun 3 times rapidly and deals damage to the enemy. The final hit deals greater damage.
■ Magical DMG: 48%
■ Final Hit Magical DMG: 72%

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