How Keeper of the Light and Viper perform as teammates in Dota 2 7.41e, from ranked matches.
In Dota 2 7.41e, Keeper of the Light and Viper win 48.10% of ranked matches when playing on the same team, over 4,807 matches.
Setting up a gank with this duo often feels a bit awkward. Viper wants to pin a target down with slows and melt them inside a Nethertoxin, but Keeper of the Light’s main defensive tool, Blinding Light, does the opposite by knocking enemies away. This can easily push a target to safety right when Viper is committing. In lane, KotL’s Illuminate is great for clearing waves, but this constant pushing can ruin Viper’s ability to control the creep equilibrium and bully his opponent near his own tower. Chakra Magic is nice, but Viper isn't as mana-hungry as other cores who truly thrive with it.
As the game progresses, this lack of coordination continues. Keeper of the Light wants to play far in the backline, channeling spells from a safe distance, while Viper is a frontline tank who wants to stand his ground and fight. Their ideal fight structures are completely different. A Viper player is looking for sustained, static fights where his damage-over-time can wear everyone down. A KotL player is looking for kiting and area control. The result is that they rarely enable each other, instead operating as two independent heroes who happen to be on the same team.
How this pairing performs across skill brackets — the duo's team win rate in recent ranked matches, split by average match rank. Ranks with too few recent matches are omitted. These rows use the last 30 days of quality-filtered ranked matches, all patches in that span combined — a wider window than the patch-scoped count above, so the per-rank match totals can exceed it.
| Rank | Team win rate | Matches |
|---|---|---|
| Herald & Guardian | 53.09% | 437 |
| Crusader & Archon | 50.77% | 711 |
| Legend & Ancient | 48.82% | 422 |
| Divine & Immortal | 52.82% | 142 |
This duo's team win rate in each recent balance patch — whether the pairing is trending up or down. Patches without enough matches are omitted.
| Patch | Team win rate | Change | Matches |
|---|---|---|---|
| 7.41e | 48.10% | ▲ +0.4pp | 4,807 |
| 7.41d | 47.66% | ▼ -0.9pp | 59,178 |
| 7.41c | 48.52% | ▲ +0.9pp | 21,100 |
| 7.41b | 47.63% | — | 21,765 |
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Data updated Aug 17, 2026.