MacroMind matchup data: real ranked games, not opinions
Samira vs Karthus
How often does Samira beat Karthus in ADC?
Samira into Karthus in ADC: 44% observed win rate across 168 ranked games.
Global ranked sample: games from every region and every rank pooled together, not one server's stats. Data runs through patch 26.12; curves updated 2026-08-07.
By 15 minutes the median game has Samira ahead by 290 gold.
Samira at 15:00
- Gold: +290
- CS: -3
- XP: -209
Typical gap to Karthus, from 167 games that reached 15:00.
Does Samira counter Karthus?
No counter here: Samira sits at 44% over 168 games. The swing lives in the spots below, so play the side you know better and chase the row that moves the number the most in this lane, then hold that lead through the first back.
Beating Karthus: the Samira game plan
A gold lead at 10:00 puts Samira at 52% across 93 games. Flip the lead and Samira falls to 33% across 75.
| The spot | Win rate | Games |
|---|---|---|
| Ahead in gold at 10:00 | 52% | 93 |
| Behind in gold at 10:00 | 33% | 75 |
| First blood | 43% | 109 |
| +kills at 10:00 | 55% | 84 |
| +CS at 10:00 | 55% | 76 |
Someone usually dies here around 4:08 in the median game, and level 6 lands near 7:38. Until your spike is online, respect the all-in.
Samira's ADC build, with receipts
Into Karthus specifically, Samira finishes The Collector first most often: 37.0% over 81 games of this matchup.
The most-finished core in this exact matchup is The Collector, Infinity Edge, Lord Dominik's Regards: 45.0% across 40 games.
The most-finished Samira core is The Collector, Infinity Edge, Lord Dominik's Regards: 57.6% across 12,717 games when all three got done. All matchups, patches 26.1-26.12.
Most games start Doran's Blade + Health Potion; the first finished item is usually The Collector (32,715 games).
Skill plan: Samira players max Q first and take Q at level 1.