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Not Updated For Current Season

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League of Legends Build Guide Author

Karthus - Mpen Rape

Last updated on July 15, 2010
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Ability Sequence

1
3
7
10
14
Ability Key Q
5
9
13
16
17
Ability Key W
2
4
8
11
15
Ability Key E
6
12
18
Ability Key R





Not Updated For Current Season

The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.



Masteries

 
 
 
 
 
4/
Sorcery
Alacrity
 
 
 
 
 
 
 
 
 
 
Brute Force
 
 
 
 
 
 
 
Lethality
Improved Rally
 
 
 
 
 
 
Havoc
 
 

Offense: 9

 
 
 
 
 
Strength of Spirit
Evasion
 
 
 
 
 
 
 
 
 
 
Veteran's Scars
Willpower
 
 
 
 
 
 
Ardor
Reinforce
 
 
 
 
 
 
Tenacity
 
 

Defense: 0

 
 
 
 
 
Awareness
4/
Expanded Mind
 
 
 
 
 
 
 
 
 
 
 
3/
Quickness
Blink of an Eye
 
 
 
 
 
3/
Intelligence
Mystical Vision
 
 
 
 
 
 
1/
Presence of the Master
 
 

Utility: 21


One of my favorite bad ***'

the skill order is quite unorthodox and reflects on the fact you will have mpen through items. so therefore maxing out your dmg early is a good way of getting early cash for the expensive items you have to build.

heres the math

MPEN
20 mpen for boots
20 mpen for guise
19.35 mpen from runes
+40% of enemies armor (lets go with a 100 mr nemesis)
40 mpen from void
99.35 mpen

then add in the reduction
-20 for abyssal
-10 for exhaust (upgraded)
-35 for *** (wall of pain)
-65 MR total

so with -65 MR. plus 59.35 basic MR penetration.
=124.35 MR ignored
then factor in the additional 40% or their base mr
lets go with 40 (0.4 * 100 MR) MPen.
=124.35+40*
=164.35 MR total ignored

and this will steadily increase if your opponent tries for more MR. making them waste money and become frustrated (making them fail more).

additionally you are also stacking some AP through your items which amounts to
+25 from guise
+70 from abyssal
+70 from void
+80 from full Rod of Ages
245 base AP from items

then add in the scaling ap from archangels.
so archangels maxed out equats to
1400 mana. (base mana add pluse eventual addition from max cap)
+45 AP
+35 ap (1400 * 2.5% {0.025})
+90 AP total

then factor in Karthus' lvl18 mana pool is about 1700
+42.5 (1700 * 2.5% {0.025})

AND THEN
factor in rod of ages max caps and base
+725 mana
+300 mana
+1024 Mana after 15 minutes
1024 * 2.5% (0.025) =
+25.6 ap
+50 base ap

so alltogether (must be tired; right?)
+245 ap (guise, void, abyssal)
+90 ap
+42.5 ap
+25.6 ap

=403.1

so to review
Mpen
59.35 + (40%)
MR reduction
-65
AP
403.1

if you do lose, its probably your fault.
comment if you find flaws.