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Io Synergies (7.41)
Best heroes to pair with Io in Dota 2 7.41, and the worst pairings, ranked by team win rate over ranked matches.
Io is the ultimate carry-amplifier — Tether's regen and speed plus Relocate ganks let an aggressive core dominate, then teleport home. It pairs best with mobile, dive-happy carries: Spectre (56.0%) global-Haunts off Relocate ganks, while Slark (55.7%) snowballs stat-steal with Tether sustain, and Tidehunter (55.4%) gets Relocated into the perfect Ravage. Give Io a snowball carry and the Tether duo bullies the map from minute one.
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| Hero | Win Rate | Matches |
|---|---|---|
 Spectre | 55.98% | 14,606 |
 Slark | 55.71% | 34,810 |
 Tidehunter | 55.37% | 22,843 |
 Muerta | 55.21% | 16,185 |
 Axe | 55.21% | 29,061 |
 Legion Commander | 55.05% | 33,437 |
 Keeper of the Light | 55.02% | 11,176 |
 Bristleback | 54.99% | 22,604 |
 Leshrac | 54.77% | 11,356 |
 Bloodseeker | 54.60% | 11,251 |
Worst paired with Io
| Hero | Win Rate | Matches |
|---|---|---|
 Timbersaw | 44.33% | 6,064 |
 Chen | 44.39% | 1,496 |
 Nature's Prophet | 44.46% | 11,823 |
 Templar Assassin | 45.14% | 13,015 |
 Morphling | 45.44% | 10,962 |
 Shadow Demon | 46.63% | 3,601 |
 Mars | 46.63% | 14,369 |
 Lycan | 46.65% | 2,971 |
 Terrorblade | 46.68% | 7,031 |
 Weaver | 46.77% | 15,053 |