Karthus is ranked Tier and has a 37.50% win rate in LoL AR URF Patch 25.04. We've analyzed 8 Karthus games to compile our statistical Karthus AR URF Build Guide. For items, our build recommends: Blackfire Torch, Sorcerer's Shoes, Liandry's Torment, Shadowflame, Void Staff, and Rabadon's Deathcap. For runes, the strongest choice is Domination (Primary) with Dark Harvest (Keystone), and Precision (Secondary). The optimal Summoner Spells for this build are Flash and Smite. Starting items should include Scorchclaw Pup, Health Potion, and Stealth Ward. Karthus's Best AR URF matchups include Thresh. Karthus's Best AR URF counters are Garen.
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Karthus Summoner Spells
Win %
Pick %
29%
88%
100%
25%
50%
25%
20%
63%
Karthus Starting Items
Win %
Buy %
100%
25%
2
20%
63%
Karthus Runes
Win %
Pick %
67%
38%
43%
29%
0%
13%
0%
13%
Karthus Items
50%
50%
33%
29%
40%
33%
43%
0%
Karthus Skill Order
 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Q | Q | Q | Q | Q | |||||||||||||
 | W | W | W | W | W | |||||||||||||
 | E | E | E | E | E | |||||||||||||
 | R | R | R |
Karthus Item Purchase Order
2800
1100
3000
3200
30003600Karthus Trinkets
Win %
Buy %
43%
88%
0%
13%
Karthus Boots
Win %
Buy %
50%
75%
Karthus Situational Items
Win %
Buy %
100%
25%
Average Karthus Duo Champions in AR URF(49% - 51% win rate with Karthus)
Best Champions to Counter Karthus in AR URF(under 49% win rate for Karthus)
Best Matchups for Karthus in AR URF(over 51% win rate for Karthus)
Even Matchups for Karthus in AR URF(49% - 51% win rate for Karthus)
