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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.
Karthus - The Deathsinger
Karthus is a champion you don't see too often but your more likely to meet him in Tier 3 games, as one of the most difficult casters next to Anivia you'll see that Karthus is still easy to play, the difficulty everyone is talking about is all about using his skills properly. If you're able to do so, got a good item build and know what you're capable of then you can become Godlike with 10/2/10 easily.
DotA Skill Comparison:
Lay Waste - Spamable limited ranged: Sun Strike
Defile - Passive: Sadist, Activate: Pulse Nova
Wall of Pain - Place able: Ice Wall
Requiem - 3 second charged: Thunder Strike
Keal - The Invoker, Lay waste & Wall of Pain.
Rotund'jere - The Necrolyte, Passive Defile.
Leshrac - The Tormented Soul, Active Defile.
Zeus - Lord of Olympia, Requiem.
Costs 6300IP - People don't know too much about him, but they learn to fear him.
Great Farmer - With Lay waste early and Defile late game you'll make a lot of gold.
Burst Damage - People say Karthus has no true source of damage, that's False.
Good Chaser - With Lay waste, Defile and Wall of Pain you can gank early on.
Costs 6300IP - Very expensive compared to most champions.
Low Armor - By late game you can easily be killed if focused.
Low Health – Getting Rod of Ages helps, but not too much.
Difficulty - No targeting Spells, all minor skill shots & timing Required.
Buy- Sapphire Crystal
Buy- 2x Health Potions
If you're going for Karthus then you need to be in the middle, if you don't you'll KS' every freaking minion in your lane leading to an under-fed teammate. Once you've started the match buy 1 sapphire crystal and 2 health potions, from here on it's all about farming and harassing, getting a kill is pretty difficult but still possible if your lanning with a newb, lagger, he overextended or your just that good- It's all about the aim & timing.
Buy- Cataclyst of the Protector
Buy- Sorcerer's Shoes
Buy- Mejai's Soulstealer
When your last hitting every minion and harrasing like hell you can't be ignored, most of the time they send down one of their people to gank me, this fails most of the time unless they got stealth + Exhaust or Warwick’s Ultimate etc. Because of this you'll have to initiate and try to gank while you’re passively farming up your item build and level, you could also get a second rank in Wall of Pain at the cost of a delayed Lay Waste for valuable slow and Armor reduction. Also time that Requiem with proper judgment, it doesn't do full damage, most of the time it's around 3/4 so be sure they will die if your going to use it, but don't save it forever… you have to use it sometime -That’s why we gank!
Buy- Rod of Ages
Buy- 3x Blasting Wands
Buy- Zhonya's Ring
Because of your insane farming abilities you can easily become one of the best defenders in the game, you can also destroy towers but you need good teammates for this to work. By late-game you can own everyone, but your health & Armor is still far too low leaving you vulnerable to DPS carries that does an insane amount of damage, just don't let them come near you! You should have won if your teammates know what they are doing, your job is to get rid of the minions and help ganking.
Buy- Abyssal Scepter
Buy- Giant's Belt
Buy- Rylai's Crystal Scepter
Things to watch out for:
Stealth Champions- Especially if your low on Health & Mana, check the map.
DPS Champions- Tryndamere, Ryze and Ashe can make pretty short work of you.
Disablers- Almost every Champion got a disable, just be careful in team fights.
Don't be afraid to Die- you'll need to be aggresive to be a good player.
Don't get ahead of your self- Don't be stupid, going in a 1v3 is no good.
Requiem Calls- Only friends, you'll have to check the map yourself.
Wall of Pain- Your main ganking tool, use it only when you need it.
Tell me what you think in the comment section, Rate if you like.