Build Guide by P.DiddyXD
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Ive been playing karthus lately and have enjoyed much success with pure AP builds and also the standard RoA build. However ive come up with a brand new build thats unique and really fun! Its based on cool down reduction (CDR) in order to spam your ult so much that enemies ragequit! Now i know u must be thinking this is madness right? How will i do any damage or survive rigtht? But this is sparta! Here's how the build works:
--> Just from the items your AP reaches 368 (excluding majai stacks), which is reasonable to buff ur ult damage.
--> The items selected are the cheapest for CD, since you cannot stack CDR due to unique passives, and so there are multiple items with CDR - these also give bonus health and mana for survivability.
--> You get 45% CDR from items, however if you manage 20 stacks majais you get an added 15% so this becomes 60% CDR!!
Quick stats on karthus' Requim ult:
-->Cost: 150 / 175 / 200 mana.
-->Cooldown: 180 / 150 / 120 seconds.
-->Magic Damage: 250 / 400 / 550 (+0.7 per ability power)
Ok so now how much can u spam karthus ult u ask? If we calculate the cooldown of karthus ult at lvl 16, this becomes 67.5 seconds! (excluding majai cooldown). This means that even at base damage (without calculating ap bonuses), you can do 400 damage to every player on the map every minute!! Now if u consider that the ult gains 70% of AP, and you may have about 200 Ap by then, your ult will do 540 damage every minute!!! This will seriously hurt most players that cannot regen health, so all you have to do is turret hug, nuke ur enemies (therfore helping your allies - but dont ks!), and enjoy the mayhem! :)
Hope you have fun with this guys! Good luck and have fun!
DEATH FROM ABOVE!!!!!