Io — Dota 2 7.41f Counters, Synergies & Win Rate
Also known as: Wisp
Io (Wisp) in Dota 2 7.41f: win rate, pick rate, top counters and best teammates, from Batru's ranked-match pipeline.
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Io by rank bracket
Io is strongest in Divine & Immortal games, winning 49.61% (#70 of 127 heroes), but drops to 48.57% (#84) in Legend & Ancient.
| Bracket | Tier Rank | Win Rate | Pick Rate | Matches |
|---|---|---|---|---|
| Herald & Guardian | #60 of 127 | 49.21% | 4.98% | 7,198 |
| Crusader & Archon | #69 of 127 | 49.23% | 5.11% | 22,952 |
| Legend & Ancient | #84 of 127 | 48.57% | 4.93% | 22,728 |
| Divine & Immortal | #70 of 127 | 49.61% | 6.03% | 8,706 |
Recent ranked matches split by average match rank — the same data behind the per-rank tier lists each bracket links to.
Io win rate by patch
Io is winning 48.75% of 144,942 ranked matches in patch 7.41f, up 0.4pp from 7.41e.
| Patch | Win Rate | Change | Pick Rate | Matches |
|---|---|---|---|---|
| 7.41f | 48.75% | ▲ +0.4pp | 4.29% | 144,942 |
| 7.41e | 48.36% | ▼ -1.4pp | 5.35% | 1,593,265 |
| 7.41d | 49.80% | ▼ -0.3pp | 4.11% | 1,217,944 |
| 7.41c | 50.12% | ▼ -0.9pp | 3.52% | 482,921 |
| 7.41b | 50.97% | ▼ -0.7pp | 3.69% | 519,519 |
| 7.41a | 51.65% | — | 3.54% | 202,401 |
Win rate and pick rate per patch window over all quality-filtered ranked matches; the newest patch accumulates matches for days after release — its row shows the current sample size.
Io counters & matchups
Io the Wisp is a carry-enabling support whose Tether shares regen and speed, Spirits provide damage and control, Overcharge amps attack speed, and Relocate teleports the duo anywhere for a gank or escape. It's strong alongside lanes it can snowball, winning best into immobile heroes its ganks catch like Timbersaw, Nature's Prophet and Chen. Io is countered by sustain-cancel and pickoff: Underlord and Crystal Maiden out-tempo it, while Riki and Dawnbreaker punish its fragile core. Draft tip: Io is a snowball carry-enabler into kill-lane drafts; it's weaker into early aggression that beats it before its carry comes online.
Strong against
 Timbersaw | 55.26% | 3,565 |
 Shadow Fiend | 55.23% | 13,729 |
 Shadow Demon | 55.08% | 1,781 |
 Nature's Prophet | 54.50% | 6,822 |
 Tiny | 54.20% | 3,273 |
 Batrider | 53.79% | 1,121 |
 Beastmaster | 53.34% | 2,244 |
 Chen | 53.14% | 636 |
Struggles against
 Troll Warlord | 43.28% | 2,491 |
 Legion Commander | 44.00% | 9,904 |
 Vengeful Spirit | 44.40% | 7,486 |
 Wraith King | 44.52% | 7,859 |
 Ancient Apparition | 44.85% | 5,055 |
 Lich | 45.00% | 7,256 |
 Crystal Maiden | 45.19% | 9,050 |
 Witch Doctor | 45.39% | 10,737 |
Io synergies
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 global-Haunts off Relocate ganks, while Slark snowballs stat-steal with Tether sustain, and Tidehunter gets Relocated into the perfect Ravage. Give Io a snowball carry and the Tether duo bullies the map from minute one.
Best teammates
 Leshrac | 60.97% | 4,279 |
 Outworld Destroyer | 54.01% | 4,962 |
| Wraith King | 53.61% | 7,316 |
 Broodmother | 53.22% | 2,208 |
| Legion Commander | 52.94% | 9,196 |
 Spirit Breaker | 52.80% | 10,633 |
| Vengeful Spirit | 52.29% | 5,445 |
 Dragon Knight | 52.13% | 4,203 |
Data updated Sep 23, 2026.