Sunder charms question

Wanted to confirm something or pick your brains a bit.

little back story real quick i have a lightning sorc and Im kinda hating it. the damage is all over the place. I have a

Nova sorc on nonladder and i love(ed) it. Lightning and

Chain Lightning just feel underpowered ATM because of the inconsistency . Admittedly I am missing a torch and I only have one skiller. But i have everything else. A.mesh, maras, vipermage, i even have

Shako i can use, so Im missing about 5-8 plus to skills. Lightning is sitting at 5-14k with

Crescent Moon and at 5-18k with Hoto.

So that brings me to this little maths. my griffons is -20 with facet. plus -35 from

Crescent Moon. So -55. Im using Plague on an act 5 merc for -11 (1/5 of 56?) for a total of -66. sunder sets to 95. so 95-66 = +29 light res ?

lets see without Sunder. my base -55 plus merc proc of LR -56 = -111 light res? so for easy of maths lets say they are at +100 light res. they's be at 0 light res?

Which is better? Is my math right? waiting for Plague to proc can be slower but im using a mid armour in a Treachery and it procs quite a bit. so that uptime is deece. obviously not as good as

Conviction. there is also the fact that some mobs will have more light res than 100. which the sunder charm sets to 95.

help me understand what im missing . Do I just need more plus to skills so that medium and low rolls still kill trash in one hit? should I still use sunder charm?

Without Sunder, the LR will work only at 1/5 to break the immunity monster.
So the calculation is: 100-11 (1/5 of 56) -55 = +34

mockingbirdreal wrote: 3 years ago

Without Sunder, the LR will work only at 1/5 to break the immunity monster.
So the calculation is: 100-11 (1/5 of 56) -55 = +34

-5 from the sunder which sets to 95?

mockingbirdreal wrote: 3 years ago

Without Sunder, the LR will work only at 1/5 to break the immunity monster.
So the calculation is: 100-11 (1/5 of 56) -55 = +34

oh you are saying that even WITHOUT a sunder LR only works at 1/5th?

If the monster was initially immune,

Lower Resist will be reduced to 20% effectiveness, sunder charm or not.

nihilninja wrote: 3 years ago

oh you are saying that even WITHOUT a sunder LR only works at 1/5th?

Yes, for immune monster only

Conviction and

Lower Resist can break the immunity.
And they only work at 1/5 of their total strength.

Amplify Damage and

Decrepify do the same but for physical resist so it is another story.

actually did'nt know that.