Quick answer
Slark vs Viper is close to even in the stored matchup model. Check the recorded patch results below; player skill and lane setup matter.
These positions don't share a lane; compare teamfight interaction instead. Usual positions are assumed from recent games — change them to match your game.
Separate lanes — this is a rotation & teamfight matchup.
Neither hero's lane record establishes a direct laning advantage over the other. Whole-match win rates and economy stay unchanged: those samples are not position-filtered.
Usual role
Situational / another teammate may buy · 10–20 min
Self-cast dispels their slows and damage-over-time, and lets you dodge their catch.
Role priorities are buyer guidance, not measured build results or exact purchase times.
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Usual role
Situational / another teammate may buy · 14–26 min
Disarms their main right-click core for most of a fight, and the evasion blunts their hits on you.
Situational / another teammate may buy · 20–34 min
Skadi's attacks cut their healing, regen and lifesteal, so heroes who win by sustaining through fights can't outheal your damage.
Situational / another teammate may buy · 8–18 min
A 1,500-gold answer that removes their kill window on you completely.
Role priorities are buyer guidance, not measured build results or exact purchase times.
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Win rates below are eventual outcomes among games lasting at least 20 minutes, not live win predictions. Pro hero averages use up to 200 recent games per hero; opposing-pair results have their own sample.
0 hero games · 0 vs Viper · 0 gold records · 0 net-worth records
10–20 min · In window
Self-cast dispels their slows and damage-over-time, and lets you dodge their catch.
0 hero games · 0 vs Slark · 0 gold records · 0 net-worth records
14–26 min · In window
Disarms their main right-click core for most of a fight, and the evasion blunts their hits on you.
20–34 min · In window
Skadi's attacks cut their healing, regen and lifesteal, so heroes who win by sustaining through fights can't outheal your damage.
8–18 min · Past window
A 1,500-gold answer that removes their kill window on you completely.
Public head-to-head at 20:00+: No public sample available. Sampled from the latest 20,000 recorded public matches, filtered to this patch.
Slark position 1; Viper position 2.
Direct lane evidence is not applicable to these selected positions.
For late-game evidence, compare the 25–60 minute outcome cohorts and recorded economy above. These do not prove which hero outscales the other.
Compare full lane combinationsA spell answer covers the named effect, not the entire enemy kit or a guaranteed win.
+0.0% vs Viper
+0.0% vs Slark
No specific answer is documented here for Viper against Slark; that does not prove the hero has no answer.
Mechanical counters describe specific spell interactions, not an answer to every ability. Proven effectiveness requires strong matchup evidence; neither guarantees a win.
Slark
Viper