No sorry. I know its a bit confusing to understand. It's not really additive. Because the second cast of the same spell always replaces the first....
No, I get that the effect is replaced. I'm speaking specifically about the effect being additive by magnitude, not the spell. I guess the term is confusing. What I mean by additive is that the magnitude is not multiplied, it's added.
I.e. +100% of 600% is 1200% or 6 + (1 x 6) = 12, but as you describe the game would add +100% to 600% which is 700% or 6 + 1 = 7. It's either additive or perhaps it's multiplicative of the base effect [ 6 + (1x1) = 7 ] and not the sum total effect. This is confusing because the total adjusted magnitude then
multiplies the magnitude of other subsequent spells (+400% of 15 damage = 15 + 60 damage, right?).
Or maybe I'm understanding this all wrong. I've gone back to the wiki and looked at the spell stacking page and found some testing in the discussion page about single spell weakness to magic stacking and it seems to convey the idea that the effect magnitude is additive for weakness to magic stacking.
If the effect magnitude were multiplicative of the sum total it should look like this when chained:
Spell: weakness to magic 100%, 4 sec
Cast 1: 100%
Cast 2: 200% = 100% + (100% of 100%)
Cast 3: 400% = 200% + (100% of 200%)
If the effect is additive, cast 3 is actually only 300% and cast 4 would be 400% (not 800%). What's confusing me right now is the addition: what gets added?
You said above that:
...casting spell B gives the opponent 100% weakness to magic from the Spell A and 200% from spell B (because it was magnified by spell A) and both are still in effect so your target has a total of 100+200=300% weakness to magic.
Then if you cast spell A again the second cast is magnified by 300% to 400%. The 300% from Spell B is still in effect.
But there wasn't 300% from spell B in effect; it was 200% wasn't it? Shouldn't it be:
Cast 1 ( spell A ) - A 100%
Cast 2 ( spell B ) - B 200%; A 100% = 300%
Cast 3 ( spell A ) - A 400%; B 200% = 600%
Cast 4 ( spell B ) - B 700%; A 400% = 1100%
...or am I missing something here?
More than two separate spells can help. If you have spells named A, B, and C each with 100% weakness to magic, and you cast A, B, C (all within the time limit) then you get
100 from spell A
200 from spell B
600 from spell C (magnified to 200 by spell A then again by 200% TO 600 by spell B)
For a total of 900% weakness to magic.
Now that's confusing, too. I don't understand the 600% from spell C.
Cast A total 100% = A 100%
Cast B total 300% = B 200%; A 100%
Cast C total 700% = C 400%; B 200%; A 100%
Isn't C equal to 400% because of adding the previous two effects collectively into the C effect: i.e C+( A+B ) = 400%? Or is it done separately: i.e. ( C+A ) + ( C+B ) = 500%?
In any case, I'd think that there would be a point of diminishing returns as more and more spells were used, because the magicka cost needed for the duration necessary in order to cast multiple spells would become inefficient (despite the casting of all of these separate spells being unwieldy).
Just so you know this is probably the most confusing thing I've written, as I'm not exactly knowledgeable about number jargon. So I apologize for both the length and the complexity (but I've looked it over several times).
I didn't really look at that thread yet. I usually stay away from glitches. I don't even use the telekinesis glitch on Atronach characters.
The glitch isn't really the point of that thread. The point was to make absorb spells more useful in spite of their inefficient magicka cost. My intention was to create an incredibly high magicka pool that could last, at the point of restoration skill mastery, for the longest duration (120 sec) of the absorb spell by having a summons act as a tethered magicka (by way of intelligence) battery. There were obvious limitations associated with the absorb tether, so it worked best as an immobile way of casting several powerful buff spells. The glitch was an unfortunate by-product. However, this glitch now seems not as permanent as I originally thought as the effects disappeared from my test save and further testing shows that the permanent effects do not always occur. I think I misled people with the wording of the original post (from the excitement that came with the proof of concept - in spite of the problematic glitch).