Heads up! We have done a partial reset of votes for season 4! You can now make new votes!

Karthus

The Deathsinger

Mage
Magical Damage
Mid

General counter information:

Deny Blue BuffDeny FarmDodge AbilitiesHard CCOutsustain Play aggressive early game

Counter Items & Summoner Spells:

Health Points: 390 (+75 / per level) Health Regen: 5.5
Mana Points: 270 (+61 / per level) Mana Regen: 30
Damage: 42.2 (+3.25 / per level) Attack Speed: 0.625 (+2.11 / per level)
Attack Range: 450 Movement Speed: 310
Armor: 11 (+3.5 / per level) Magic Resistance: 30 (+0 / per level)
Influence Points (IP): 3150 Riot Points (RP): 975

Death Defied

Passive

Upon dying, Karthus enters a spirit form, which allows him to continue casting spells for 7 seconds. During this time, his abilities cost no mana.

Lay Waste

Q

Active: After a 0.5 second delay, Karthus blasts target area at the cursors position, dealing magic damage to every enemy in the area. The damage is doubled if it only hits one unit.
Cooldown: 1 second
Range to Center of AoE: 875
Radius of AoE: 100

Cost: 20/26/32/38/44 mana
Magic Damage (Multiple Target): 40/60/80/100/120 (+0.3 per ability power)
Magic Damage (Single Target): (+0.6 per ability power)/80/120/160/200/240

Wall of Pain

W

Active: Karthus creates a wall between 2 obelisks at target position for 5 seconds. Enemies who pass this wall have their armor, magic resistance, and movement speed reduced for 5 seconds.
Cost: 100 mana
Cooldown: 18 seconds
Range to Center of Wall: 1000

Wall Length: 800/900/1000/1100/1200
Maximum Wall Sight est.: 1300/1325/1350/1375/1400
Armor and Magic Resist Reduction: 15/20/25/30/35
Slow: 40/50/60/70/80 %

Defile

E

Toggle Off: When Karthus kills a unit, he restores mana.
Toggle On: Karthus surrounds himself with the souls of his victims, dealing magic damage per second for a high mana cost.
Radius of AoE: 550

Mana Restored: 20/27/34/41/48 per kill
Cost: 30/42/54/66/78 mana per second
Magic Damage: 30/50/70/90/110 (+0.2 per ability power)

Requiem

R

Active: After channeling for 3 seconds, Karthus deals magic damage to all enemy champions regardless of distance.

Cost: 150/175/200 mana
Cooldown: 200/180/160 seconds
Magic Damage: 250/400/550 (+0.6 per ability power)


Counter Tips

If you see that he has low mana, just ignore him and don't kill him. This will deny him from casting any spells using his passive.
Step away from his corpse when he dies, as his defile will do massive damage to you if you stand in it.
Buying a hexdrinker or a Banshee's Veil will greatly increase your chance to survive Requiem.