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You ain't got luck, time or life on your hands (Karthus)
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Choose Champion Build:
Alas, I will not give a build for [Twisted Fate] and [Zilean] because I am not a big player of those characters, tho I keep them in the build for their passives as you will see
This guide is for those who know how to play [karthus], but want to add alittle zing to their premade... this guide is NOT recommended for beginner [Karthus] players
Why? Cooldown, ability power (abit) and magic pen (always needed)
Why? Mana, buff to summoner spells, movement speed (as you are squishy), more gold, EXP and COOLDOWN (this is the bread and butter of the utility tree for karthus) extra gold per kill (or assist) and of course [Mastermind]
Straight forward, with the masteries and runes, your ult at level 3 will have a 70 second cooldown (and with items) that means every minute u can zap that pesky blue team (or purple).. rather then every nearly 2 minutes..
9x [Greater Mark of Insight]
Why? Magic Pen of course, great to get through that little bit of magic resistance those level 3-4 players have nyuk nyuk nyuk
6x [Greater Seal of Clarity]
[Karthus] is VERY mana dependent especially with his [Defile] on.. this helps (if you play him right) give you that ability to stay in lane farming kills with your [Lay Waste]
3x [Greater Seal of Vitality]
[Karthus] is squishy, he can get ganked easily.. and in team fights, he WILL be focused.. you know this.. if you don't.. play him and you'll see lmao... I find the extra health really helps, and instead of 9 [Greater Seal of Clarity] you have 6 and it doesn't effect your mana regen..
6x [Greater Glyph of Force]
Since you are in the utility tree, your damage early game will be laughable.. trust me it is, it's brutal, and altho your ult will deal just flat damage (250) which is great vs level 4 champions.. this will give you that leg up just a bit..
3x [Greater Glyph of Focus]
I find trading up 3 [Greater Glyph of Force] for extra cooldown is good.. you can always replace this with [Greater Glyph of Celerity] but I like the instant cooldown.. plus I find that his [Wall of Pain] pops up more even after using it..
NOTE: You can if you like use all 9x [Greater Glyph of Focus] or [Greater Glyph of Celerity] .. you can have a very quick ult ... but your damage will suffer .. your call
3x [Greater Quintessence of Swiftness]
1 word... survival.. Karthus is a turtle.. and this turtle needs some movement speed..
Dorans vs Boots + 3 health pots
Dorans = Your damage is increased, you have more health and mana regen (allowing for more spamming) .. downside you dont move as fast, and if u are getting hit by an enemy a lot, your going to have to teleport back and forth
Boots + 3 Health pots = A LOT less damage, but you can stay in lane more, move away more, and survive more.. use your discretion..
Either way.. get boots first, then 2 dorans rings.. or a doran ring.. boots.. second dorans rings.. after that fiendish codex for cooldown (as you will have your ult on cooldown by the time you get this) and then finally your sorcery boots.. OR the cooldown boots (depending on if they have a tanky team or not)
Now build right to Rabadons hat.. or morellos... Morello's is good if you are fighting a champion like [Akali] or [Mordekaiser] .. why? Because the active ability screws with their healing abilities making you get the kill and not die when engaging them.. just make sure to USE it lol...
Finally get rylai's for extra health.. voidstaff to melt them more and the hourglass cuz if they have a lot of CC you will need it (plus nothing more fun then popping your [Defile] in the middle of a team fight and then popping your hourglass as they focus you lmao..
Let me know what you guys think and how it worked out for you!
If you come up with a better idea on the same lines, let me know :)