Reduced Mana reserved - how does it work?
How much mana will "Reduced Mana reserved" reduce from Spells that reserve Mana?
Here is what I mean: http://pathofexile.gamepedia.com/Reduced_Mana_Reservation An Example is Sovereignty: http://pathofexile.gamepedia.com/Sovereignty Putting points into it nets you 14% reduced mana reserved.
Let's say we have 10% reduced mana reserved
When you cast Purity of Lightning: http://pathofexile.gamepedia.com/Purity_of_Lightning Which reserves 40% mana.
By how much will it reduce the reservation?
- by -10% additive result: 30% mana reserved
- by -10% multiplicative result: 36% mana reserved
Incase it was additive: How does it work with a second aura? Let's say #2 is 20% mana reservation
- -10% of 40%: 30% mana, and 20% from the other, result: 50% mana reserved
- -10% of 40%: 30% mana, and -10% of 20%: 10% mana, result: 40% mana reserved
Best Answer
Reduced mana reserved can be tricky. You can try out this Reduced Mana Reserved Calculator to get a better understanding of how the math is applied.
In short, it takes the amount of mana set to be reserved (10% of your total) and chips away a subpercentage. But some things might not be as you would expect.
Here is a practical example:
I have 41% reduced mana reserved passives from the tree. I have a lvl 17 reduced mana gem, which gives me a 0.74 mana multiplier on the reservation. I want to know the exact calculation how much percentage a 60% and 40% is going to reserve.
So far i expected it to be: 60% * 0.59 * 0.74 = 26.196, which seems to be wrong.
I checked the source code of the mana reservation site linked before: http://fogz.mine.nu:8080/poe_reserved_calc/
There, you can see that they first multiply the aura reservation with the mana multiplier of the gem and then round down:
60%*0.74=44.4% -> 44% reserved 40%*0.74=29.6% -> 29% reserved
Then this reservation is multiplied with the passives and rounded up:
44%*0.59=25.96% -> 26% reserved 29%*0.59=17.11 -> 18% reserved
This seems to be the correct calculation.
Assuming this is correct, it is funny, because you actually need a level 20 reduced mana and at least 0.41% reduced mana reservation passives to rock four 60% auras on mana, which is exactly what I hope to achieve.
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How does reduced mana reserved work?
Having mana reserved does not reduce the rate of mana regeneration, so it will reduce the time taken for mana to regenerate to its (temporary) maximum. Reserved mana values are multiplied by support gem mana cost & reservation multipliers as usual. The Blood Magic passive will cause life to be reserved instead of mana.Does reduced mana cost of skills affect auras?
reduced mana cost passives don't affect aura reservations. reduced mana cost support does. It modifies the reserved amount multiplicatively. Ie, 5% reduced reserve with a 40% aura is 40*.What is cost and reservation multiplier Poe?
Cost & Reservation Multiplier: 140%Supports any skill gem. Once this gem reaches level 2 or above, will raise the level of supported gems. Cannot support skills that don't come from gems.Is blood magic still in Poe?
Version history. (Undocumented) The mod Socketed gems have Blood Magic has been removed from the game and replaced by Socketed Gems Cost and Reserve Life instead of Mana, or Socketed Gems Reserve Life instead of Mana, or Socketed Gems Cost Life instead of Mana, affects all version.How To Reserve Mana for ALL the Auras - 273
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