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Io (June 2014) Synergies / Counters

This feature is experimental. The synergies are calculated against the baseline rate at which heroes are picked at, but the counters are still skewed by the overall frequency that a hero is chosen. Use these as guidelines and compare with the overall tier list, rather than as strict fact.
Heroes Io Synergizes With
HeroChange
Tiny+%30.1
Sven+%7.6
Storm Spirit+%3.8
Phantom Assassin+%2.7
Gyrocopter+%2.5
Riki+%2.2
Chaos Knight+%1.8
Skywrath Mage+%1.7
Juggernaut+%0.8
Lina+%0.2
Heroes Io Counters
HeroTimes Picked After
Lycan11
Mirana9
Brewmaster8
Treant Protector7
Rubick6
Invoker6
Lich6
Tidehunter5
Dark Seer4
Doom4