Karthus

Playstyle Profile

Karthus is a backline carry — deals massive sustained damage from a safe position

Teamfight Role

Backline Carry

Power Spike

Late game

Split Threat

None

Backline Access

Low

Karthus's Strengths

• Massive sustained damage from safety — Karthus melts frontlines while positioned behind their team
• Outscales most opponents — Karthus grows stronger every minute and takes over in extended games

How to Play Karthus

Champion-specific pre-match tips

Gameplay tips on Summoner's Rift

Lane Phase

Position your Q slightly behind the enemy champion, ensuring it misses the minion wave to trigger the double isolation damage.

Lane Phase

Last hit minions using auto-attacks or single-target Qs while your E is toggled off to trigger its passive mana restore.

Lane Phase

Pan your camera to side lanes immediately upon reaching level 6 to look for an ult cast from under your tower, ensuring the long channel cannot be interrupted.

Mid Game

Cast W across narrow jungle chokepoints before a skirmish to shred enemy magic resist and slow targets for guaranteed Q hits.

Mid Game

Cast Q twice while your E burns after dying in a skirmish, then immediately channel your ult during the final three seconds of your passive.

Mid Game

Toggle E off the moment you finish clearing a wave or objective to avoid draining your mana pool before the next fight breaks out.

Late Game

Flash directly onto the enemy backline with E active during objective standoffs, forcing them to either concede space or kill you and fight inside your passive zone.

Late Game

Channel your ult from a safe distance just before a major objective fight begins to force the enemy team to contest with a massive health disadvantage.

Late Game

Place your W across the objective pit entrance when the monster drops below 3000 health to slow incoming enemies and zone them off the steal.

For matchup-tailored tips, download Baron Buff's AI Coach & Companion App.

Gameplay tips in Arena

• Place W across the enemy retreat, keep E active only while both targets are near, and land isolated Qs from behind your partner. Use R after defensive shields or heals are committed.
• Build Blackfire Torch, Liandry's Torment, Rabadon's Deathcap, and Detonation Orb. Burn and mana support uninterrupted pressure; Zhonya's can force enemies to remain in E.
• Prioritize Infernal Conduit, Magic Missile, Jeweled Gauntlet, and It's Killing Time. Persistent damage and a protected passive cast matter more than risky close-range Qs.

Karthus Build

This might not be your familiar build. We look at ranked games after each item was bought. If the player or team gained ground in gold, we rate that item higher.

Core

• Blackfire Torch
• Sorcerer's Shoes (Boots)
• Shadowflame

Situational

• Rabadon's Deathcap
• Void Staff
• Zhonya's Hourglass
• Morellonomicon

Karthus Runes

The most popular rune page and summoner spells for Karthus in ranked games over the last 30 days.

Domination + Sorcery · 45.9% WR · 4,366 games

• Dark Harvest
• Cheap Shot
• Grisly Mementos
• Ultimate Hunter
• Axiom Arcanist
• Gathering Storm
• Adaptive Force
• Adaptive Force
• Health Scaling

Summoner spells

Exhaust, Smite

Karthus Skill Order

The recommended skill order for Karthus from ranked games over the last 90 days: the first three skill points, then the order to max abilities.

1. lvl 1: Q
2. lvl 2: E
3. lvl 3: Q
4. max: Q
5. max: E
6. max: W

How to Counter Karthus

Counter strategies and draft context

gap close quickly, flank from angles they can't control, or out-sustain their mana pool

• Folds to direct pressure — Karthus relies on frontline protection and collapses when dived
• Weak early game — Karthus needs time to scale and can be punished before hitting full power
• Assassins and divers that close gaps quickly
• Champions with long-range engage tools

Karthus's Weaknesses

Dive-heavy compositions collapse on Karthus when allied peel and frontline protection are missing. Aggressive early compositions force the pace and put Karthus behind before the scaling arrives.

Best Synergies with Karthus

Team synergies and draft context

Peel supports and frontline tanks protect Karthus, and safe positioning unlocks their full damage. Waveclear and disengage allies stall the game for Karthus's scaling, and every minute makes them stronger. Frontline tanks zone enemies into the path of your skillshots. Engage champions with AOE crowd control set up wombo combos.

Draft Context

• Lacks a frontline or peel — Karthus gets dove with no protection between them and the enemy
• Drafts an aggressive early comp that can't protect Karthus through the scaling phase

Learning Curve

Based on 1.2M+ matches across all ranked elos, showing how Karthus's win rate changes with mastery level

Karthus has exceptional depth — there is always something new to learn, and the learning curve is among the steepest in the game. Expect a long stretch of low win rates before meaningful improvement — mastering this champion demands serious commitment.

Skill Cap

Very High

Cost of Learning

Extremely High