Priest.

Chain Lightning non ex

Attacks: 1
Hits: 3
Coefficient: 3.0 (?) 

The thing here, after the first hit, the enemy gets a -15% light resist... so is it then 1. > 1.15 > 1.15 ?

All Relics upon hit (non ex)

Attacks: 1
Hits: 1 
Coefficient: 1 

Lightning Relic (electric shot) 

Attacks: 1
Hits: 10 (you cant calculate that it, because NOWHERE you get all hits, most of the time 2-4) 
Coefficient: Per bolt 0.5

Mind Breaker

Not tested.

Detonate

Attacks: 1
Hits: 1
Coefficient: 1 

Somewhat hard to calculate as you need a electrocute debuff, wich is at least -15%. 

Holy Burst:

Attacks: 1
Hits: 5
Coefficient: 1

Avenging Wave:

Attacks: 1
Hits: 1
Coefficient: 1

Judgement:

Attacks: 1
Hits: 26
Coefficient: Really really hard to get that, since it has random chances to decrease the light res by 33% for 5s, if it procs at the start, the last few hits dont get it... sooo xD

Miracle relic

Attacks: 4
Hits: 16
Coefficient: 50% each wave.. so 2?

Grand Cross

Attacks: 1
Hits: 5 ( after that only 10% original damage) 
Coefficient: 50% each hit so 2.5?