August on Twitter: "Thinking about the time Karthus had a bug that made him unkillable. He still lost 15% of his games. https://t.co/jWzXG5V64N" / Twitter
Karthus “nerfs” : r/karthusmains
LoL Patch 12.13 | All Buffs and Nerfs | RiftFeed
Pentakill III: Lost Chapter Karthus Skin Spotlight - League of Legends - YouTube
Riot details nerfs for Karthus, Kled, Kassadin, and Katarina in League's Patch 10.20 preview - Dot Esports