[2.0] Kongor's Terror - "Crit" 2H Maul (Theory crafting, not complete, need advice)

-Hit can't be evaded
-30%-40% increased crit chance, so the base crit increased form 5% (1.3.x) to 6.5-7%(2.0.x)
-Added Local Physical Damage Mod increased to 56-400
-Your Critical Strikes do not deal increased Damage
-You gain Onslaught for 2 seconds on Critical Strike
*Onslaugh: A buff that grants 20% increased attack speed, cast speed, and movement speed*.

-Gain a Power Charge on non-Critical Strike
-Lose all Power Charges on Critical Strike
With 3 power charge, it give you increased 150% global critical chance, that means you have ~20% crit chance on hit with Kongor's Maul.
Your critical strikes don't deal increased damage, but you gain onslaught for 2s, and the critical hit still deal crit effect (freeze, burn, shock....)

https://www.pathofexile.com/passive-skill-tree/AAAAAwEAAecEswUtBTwHdQmWC2EUIBRNGJEaOB6UIVUnICcvLPs26DkOOzs8BUCgQT9Gt0d-SHhQR1HmVw1XVFnzXhNfP2CRYVJlTWdYaGVo8nKpdO12f3asd1N673uMfuCCB4TEhNmE74VShmCHaooiirOQVZBsk6iUh5d5nleexZ7Nn8uiAKcwqSeplKyqrY2vbLyfvTa-p8BmwKbE9sVTxq7PftIh02_ZYdrB3DLcPd-y5FHkreoY6wnvDu9O73zwH_JB85v3MvxL
if you use carcass jack or hybrid gear, you can pick "Iron reflexes" key node

Normal: Help Oak for 40 life
Cruel: Help Oak/Kill all
Merciles: Help Oak for 1 endurance charge

4l/5l/6l: Ground slam - Multistrike - Melee physical damage - Mortify - Increased area damage / Concentrated Effect / Item rarity / Physical to lightning - Added fire damage
4l: Blood rage - Rallying cry - Enduring cry - Increased duration
4l: Cast when damage taken - Immortal call - Warlord's mark - Increased duration
Leap slam - faster attack
Vengeance - endurance charge on melee stun

with blood rage + 3 frenzy charge + rallying cry + onslaught + atziri's promise