Viper counters and build in Dota 2

Naga Siren (+7.0%), Phantom Lancer (+5.0%), and Arc Warden (+4.9%) are the strongest against Viper — they have the biggest advantage over it at this rank.

Viper does best against Huskar (+9.2%), Nyx Assassin (+5.0%), and Bristleback (+5.0%).

The best partners for Viper are Elder Titan (+3.9%), Sven (+3.2%), and Centaur Warrunner (+3.0%): together they win more often than expected from each one’s win rate.

“Position 2: Mid Lane”: players usually start with Tango, Iron Branch ×2, Circlet, Faerie Fire, Slippers of Agility, and Observer Ward, pick Boots of Travel for boots, then build Dragon Lance (13 min), Yasha (21 min), Hurricane Pike (22 min), and Black King Bar (32 min).

Most often players take: at level 10 — “+1s Viper Strike Duration” (66%), at level 15 — “+15% Poison Attack Slow / Damage” (70%), at level 20 — “+70 Viper Strike DPS” (65%), and at level 25 — “-50% Viper Strike Mana Cost / Cooldown” (69%).

Viper is played most often as “Position 2: Mid Lane” — 51% of its matches. Less often: Position 3: Off Lane (24%) and Position 1: Safe Lane (11%).