Valiant Force Forum

My current team :
1. 5* Zeus Kane Grand Ranger
2. 5* Athena Zedd Elementalist
3. 5* Athena Zedd Mind Warder
4. 5* Zeus Vincent Berserker
5. 5* Hera Vincent Dragoon

I have Kiera Athena, should i build her? if yes, what class should she choose? I need advice, Thank you.

I am not exactly experienced enough to give advice but I do own an Elementalist Kiera of Athena faith myself and if paired with a Mind Warder Zedd they can both seriously bring havoc to the enemy team because of her Persistent MAG passive aura. The problem is keeping them alive until then and making sure there are not any HP shields or damage reduction shields up online when you use their skills.
Making two Mind Warders feels overkill in my opinion but actually thinking about it myself it may be a viable strategy but probably not with your current units so I will not expand on it.
Rune Magus is probably only a PvP viable promotion and honestly it still is not in a great spot even after all the buffs in my opinion so again, skipped.
Warlock is also in a weird spot and also has a PvP-based aura. I have seen some poison strats going on and some random parties with Warlocks in them but I do not see them being that viable so also ruled out. I get that the theme going on with Warlock being able to damage and heal but the heal rarely gets put to use because they drop in a heartbeat or a random stray arrow.

Disclaimer: What typed above is my opinion and should not be taken as consideration nor quoted as actual advice.

Athena Kiera...
As of current meta, Elementalist is THE WAY to go. Her skill damage is the highest multiplier based on MAG, so Athena Kiera would give the most skill damage. Except that keeping her alive might be an issue.
Warlock is good for PvP, due to the heal + TP enemy on tile to random place... hopefully not next to Kiera! But damage is slightly worse off, and when on Auto, her skill does not work.
Mind Warder is good for the turn delay, so any Kiera works fine actually,no specific need to have Athena Kiera.
Rune Magus' wall HP is based on MAG, so it MIGHT be useful, but in PvP, due to the number of turns, walls are not as useful as turn delay or pure damage imo.