MacroMind matchup data — real ranked games, not opinions

Kog'Maw vs Karthus

How often does Kog'Maw beat Karthus in ADC?

Kog'Maw into Karthus in ADC: 53% observed win rate across 55 ranked games. Counted from real matches, and every number here shows its sample size.

By 15 minutes the median game has Kog'Maw behind by 124 gold.

Does Kog'Maw counter Karthus?

Too close for a counter call: Kog'Maw sits at 53% over 55 games, inside the noise band. On this sample neither pick counters the other — the swing lives in the conditions below, so play the side you know better.

Beating Karthus: the Kog'Maw game plan

Someone usually dies here around 3:23 in the median game, and level 6 lands near 7:40. Until your spike is online, respect the all-in.

Kog'Maw's ADC build, with receipts

The most-finished Kog'Maw core is Blade of The Ruined King, Guinsoo's Rageblade, Runaan's Hurricane: 55.8% across 1,775 games when all three got done. All matchups, patches 16.1-16.12.

Most games start Doran's Blade + Health Potion; the first finished item is usually Guinsoo's Rageblade (4,901 games).

Skill plan: Kog'Maw players max W first and take W at level 1.