I have one more things to share here for some discussion. If anyone can enlighten me on my breakdown.
Resistance and negative resistance vs Damage
Sunder Charms bring all enemy resistance to 95%. Which breaks immunity.
Conviction aura and lower resist act as only reduce 1/5 of the resistance. For Infinity the level 12 conviction Aura only works 1/5 effectiveness so meaning at level 12, -85% resist, Will only act as -17% resist.
Resistance work by if monster have 75% lightning resistance then all lightning damage dealt to monster will be lesser by 75%. If I cast 5000 Lightning damage means monster will only received 1250 lightning damage. If the monster lightning resistance is > 100% then it is immune and hence my lightning will do zero damage to the monster.
Example:
A monster with 130% lightning resist. (anything above 100% resist for monster is immune)
Assuming Nova Sorc with 5000 Nova Damage already include max lightning mastery and items that give +lightning damage.
Types of Setup |
Damage enemy received |
Remarks |
With conviction No Sunder |
0 |
Monster still have 113% resist. Immune not broken |
With Sunder No Conviction |
250 |
Monster now have 95% resist |
With Sunder and Conviction |
1200 |
Monster now have 76% resist |
With Sunder and Conviction and Items with – res |
5450 |
Monster now have -9% resist. |
Negative res item set up like: Infinity Scythe -55 lightning res, Griffon -25 lightning res, Armor with -5/5 jewel. Total -85% lightning res.|
Take note enemy resistance cannot fall below -100%.
Conclusion:
A Nova Sorc is still better be equip with an infinity Scythe even after using sunder charms. The advantage here is all places can be clear and Nova Sorc do not need to rely on merc to kill lightning immune monster that an infinity is unable to break the immune. While its true most lightning immune monster in game have about only 110% resistance which can be break by infinity but there is still a fair amount with more than 120% lightning resistance.
For cold Sorc it will be different story.
With Set up of using Nightwing, death fathom, blizzard ormus all socketed with -5/5 cold jewel and snowclash belt. Without charms, the Blizzard damage is at 20000. And level 12 cold mastery gives -75% to enemy cold resistance. So total including the 3 facet jewel will be -90% to enemy cold resistance.
Example: 130% cold immune monster
Types of Setup |
Damage enemy received |
Remarks |
With conviction and -ve cold res from gear and skills, No Sunder |
0 |
Monster still have 113% resist. Immune not broken. Unable to break immune so -ve res cannot be apply. |
With Sunder and -ve cold res from gear and skills, No Conviction |
19000 |
Monster immune after sunder is 95% res and the -ve res items and skills reduce 90% res so monster left with 5% res. |
As you can see there is no need to max cold mastery and use of infinity for a Cold sorc that use sunder charms. The damage output is already enough to kill player 8 monster. Therefore conclusion is infinity is not really needed for a cold sorc once able to use sunder. And since most or which is all cold immune monster have very high cold resistance of more than 120%. Infinity is useless while Sunder can do the trick.