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Comment by Taraezor

If you have come here looking for the Mage Arcane Charge "buff" then you have come to the right place :D

Although the "Used By" tab lists quite a few NPC users, this is also used by Arcane Mages. Curiously, this is not considered a "Buff" by Blizzard and does not exactly appear in the top right of the default screen alongside your other buffs. It appears under these, in the area reserved by Blizzard for displaying player debuffs.

(Yeah sure one Mage ability has a mana cost increase and that's a debuff but it remains that every other feature of this feature packed spell is beneficial. Blizzard's reasoning actually makes sense: Mages cannot REMOVE this buff, so can't display it like other buffs. I would have put a special halo around or something instead of throwing it into the screen's debuff area)

Programmers will need to in fact test for UnitDebuff("player",i), this spell ID and the debuffCount field in order to monitor the stacks of this very beneficial (in fact crucial to Arcane Mages) BUFF.

Note the big change in Patch 5.2: Maximum stack is now 4, down from 6.

Comment by gotstoomanytoons

There is no longer a debuff. Arcane Charge is now a resource that can be retrieved like this:
charges, maxCharges = UnitPower("player", SPELL_POWER_ARCANE_CHARGES), UnitPowerMax("player", SPELL_POWER_ARCANE_CHARGES)

Comment by WokkaD

If you are like me and have come here looking to see how to generate Arcane Charges on your Mage, here's the answer :
Arcane Blast and Arcane Explosion both generate 1 Arcane Charge

Links WeakAuras Export

Arcane Charge

Arcane Charge
Instant

Modifies Damage/Healing Done +30%:
Arcane Barrage

Modifies Damage/Healing Done +60%:
Arcane Blast

Modifies Jump Targets 0:
Arcane Barrage

Modifies Cast Time -8%:
Arcane Blast

Modifies Power Cost +100%:
Arcane Blast

Buff

Arcane Charge

Increases the damage of Arcane Blast, Arcane Missiles, Arcane Explosion, and Arcane Barrage by 60%.

Increases the mana cost of Arcane Blast by 30%[, and reduces the cast time of Arcane Blast by 100%.][.]

Increases the number of targets hit by Arcane Barrage for 50% damage by 0.

Spell Details

Duration

n/a

School

Arcane

Mechanic

n/a

Dispel type

n/a

GCD category

n/a

Cost

None

Range

0 yards (Self)

Cast time

Instant

Cooldown

n/a

GCD

0 seconds

Aura proc chance

100%

Effect #1

Apply Aura: Modifies Damage/Healing Done
Value: 60%
PVP Multiplier: 1
Affected Spells:

	Arcane Blast

Effect #2

Apply Aura: Modifies Damage/Healing Done
Value: 30%
PVP Multiplier: 1
Affected Spells:

	Arcane Barrage

Effect #3

Apply Aura: Modifies Jump Targets (17)
PVP Multiplier: 1
Affected Spells:

	Arcane Barrage

Effect #4

Apply Aura: Modifies Cast Time (10)
Value: -8 milliseconds%
PVP Multiplier: 1
Affected Spells:

	Arcane Blast

Effect #5

Apply Aura: Modifies Power Cost (14)
Value: 100%
PVP Multiplier: 1
Affected Spells:

	Arcane Blast

Flags

Cast time is hidden
Do Not Sheath
Aura is Debuff
Unaffected by invulnerability
Generates no threat
No Aura Icon
Not an Action
Suppress Caster Procs
Does not engage target
No Cast Log
Allow Cast While Casting
Suppress Weapon Procs
Aura Points On Client
Enable Procs from Suppressed Caster Procs
Allow Class Ability Procs

Guides

Best Arcane Mage Conduits

Arcane Charge

Buff

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