Aura reduce mana reservation calculation

I d like to be sure how mreduced mana reservation is calculated. If we take all the reduced mana reservation in the tree and link a Lv 20 reduced mana we add 46 + 29 : 75%. If i add the 30% less mana reserved after blood magic it should be : 0.75*1.30 = 0.975.
So if i m still right, a 60% aura sould reserve like this : 60*0.125=7,5.

So, where am I wrong ? :)

the problem here is that its "of" 60%.

that means its 75% "OF" 60 = 45 which means 60% is reduced to 45%.

that 30% after BM means also 30% of 45 = 15
so 45 - 15 = 30% mana reservation

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AluCarD1911 wrote:

the problem here is that its "of" 60%.

that means its 75% "OF" 60 = 45 which means 60% is reduced to 45%.

that 30% after BM means also 30% of 45 = 15
so 45 - 15 = 30% mana reservation

its 30% less which i think means 45% - 30% = 15%

"

NagiSoi wrote:

"

AluCarD1911 wrote:

the problem here is that its "of" 60%.

that means its 75% "OF" 60 = 45 which means 60% is reduced to 45%.

that 30% after BM means also 30% of 45 = 15
so 45 - 15 = 30% mana reservation

its 30% less which i think means 45% - 30% = 15%

Less/more is multiplicative.

The real calculation should be:
60% * (1-100*reducedmanafrompassives) * reducemanasupport* 0.7ifBM

So, p.e. you have 41% reduced mana from passives (my build), and you link an aura to a 79% reduced mana gem.

You get 0,6*0,59*0,79= 28% reserved.

If you are aBM user with 20% reduced passives you have 0,6*0,8*0,7*0,79=26,5%

Reduced man gem, despite saying reduced, it is a cost multiplier gem, same as adding a LMP p.e. will multiply the cost, the reduced gem will also do the same.

"

AluCarD1911 wrote:

the problem here is that its "of" 60%.

that means its 75% "OF" 60 = 45 which means 60% is reduced to 45%.

that 30% after BM means also 30% of 45 = 15
so 45 - 15 = 30% mana reservation

Although you have the order of operations correct, 30% of 45 is 13.5%, which means it's actually 45 - 13= 32% life reservation.

Reduced mana from passives dont work on aura

Onley "Reduced mana reservation" does - and there are only like 20-25% at the tree.

On the wiki it says it s calculated this way :

"

"More" and "Less" mean that that bonus is a multiplier. Effects with "More" or "Less" are rarer and more powerful than "Increased" and "Reduced", and are usually limited to skills, Unique Items, and Keystone Passives. For example, if a player has "30% More Spell Damage on Low Life" from Pain Attunement, as well as "50% More Spell Damage" from Righteous Fire, they will gain a total of 1.5 * 1.3 = 95% more spell damage.

so :
0.75*1.3 = 0.975
60*0.125 = 7.5

A 60% aura should cost 7.5%

^

"

Adrienger wrote:

On the wiki it says it s calculated this way :

"

"More" and "Less" mean that that bonus is a multiplier. Effects with "More" or "Less" are rarer and more powerful than "Increased" and "Reduced", and are usually limited to skills, Unique Items, and Keystone Passives. For example, if a player has "30% More Spell Damage on Low Life" from Pain Attunement, as well as "50% More Spell Damage" from Righteous Fire, they will gain a total of 1.5 * 1.3 = 95% more spell damage.

so :
0.75*1.3 = 0.975
60*0.125 = 7.5

A 60% aura should cost 7.5%

Thats incorrect because your reducing (less) reserved cost, not increasing it.

3 seperate things happening;

the cost of the gem is directly reduced by support gem, this isnt "reduced mana reserved" and it isnt "less mana reserved" its simply reduced cost of supported gem.

60% * 0.71 = 42.6% for lvl 20 gem

Next is reduced mana reservation, if you took all but 1 passive node thats 41% so:

42.6% * 0.59 = 25.134%

"less" (or more) xxx abilities are applied to the final figure. Its a multiplier for whatever you already have, in this case "30% less" would be a 0.7 multiplier.

25.134 *0.7 = 17.59%

Thats your final reservation using a max lvl support gem, most passives and no uniques. Alpha howl and prism shield abilities stack additively with "reduced mana reserved" passives. I dont think there are any other uniques that affect mana reservation.

If you took all the passives (not blood magic one) and used both uniques, auras in the shield would get 79% reduced mana reservation, or cost 12.6% max life. Thats without a support gem. Auras in the helm (with lvl 20 support) would cost 19.59% mana.

"

return33 wrote:

Reduced mana from passives dont work on aura

Onley "Reduced mana reservation" does - and there are only like 20-25% at the tree.

They added a bunch more when they increased the reservation cost.

Also can someone answer me this, did the basic gem aura abilities get a buff, or did GGG mean the new "increased affect" passives when they said auras would be stronger? still patching.