Max to half... (in General)

Now I know the damage you do is random, but I fought with my CoC mage against single non-AMF minion and in 4 rounds I might get 30k damage or 15k. I also use a elb and I don't see such difference between MPB and lowest blow. Why is my CoC so affected by random damage?

It's very hard to judge randomness as a human without crunching numbers. How many battle did you check?

Well it's against a single Minion with no AMF and no gear so I'm supposedly doing pure damage. l must be at my 20 fight against him and still get the same results.

Enigma takes damage from his own Cone of Cold (0)!Enigma's Cone of Cold hit Phobophile [17852]ﾠ
Melee Combat
Enigma takes damage from his own Cone of Cold (0)!Enigma's Cone of Cold hit Phobophile [18691]
ﾠEnigma takes damage from his own Cone of Cold (0)!Enigma's Cone of Cold hit Phobophile [30316]Phobophile beat Enigma [10251]
ﾠEnigma takes damage from his own Cone of Cold (0)!Enigma's Cone of Cold hit Phobophile [21225

All damage should fluctuate by 50%. However, Elb damage also ramps up as the ranged penalties come off during melee. At lower levels AC's fixed damage reduction can come into play to also throw off the numbers, so as I said it's hard to judge.

Then why does AMF do the same damage every round when it's supposed to be about damage dealt.

Caculates the MPB you could do with no resistance and deal a % of it every rounds?

AMF is special, I dunno. Anyway, it does 40% of the %AMF * the max possible damage back.

Ok thanks.