Karthus·Support Build

Most Popular

If you want to use the most popular Karthus Support build, you should take Exhaust and Flash as your Summoner Spells. For runes, you should pick Dark Harvest as your keystone, followed by Cheap Shot, Grisly Mementos and Ultimate Hunter in the primary tree, as well as Axiom Arcanist and Gathering Storm in the secondary tree. For rune shards, you want Adaptive Force in offense, Adaptive Force in flex and Health Scaling in defense, though it depends on the matchup. Finally, for your items, you should build Zaz'Zak's Realmspike as your first item, followed by Sorcerer's Shoes and Blackfire Torch. For your last 3 items, you should build Liandry's Torment, Shadowflame and finish with Rabadon's Deathcap. For the skill order, you want to stick with Q - E - W. Right now, this build has 48.1% winrate over 160 matches played.

Situational Karthus Runes and Items

Depending on the context of your game, your matchup, and enemy champions, you might want to consider building some situational items or take specific runes. Carefully examine your team, enemy team, game state , and your matchup to plan your Karthus build accordingly! For example, when it comes to rune shards, you might want to take either Armor or Magic Resist, depending on which champion you are about to lane against.