How Crystal Maiden and Io perform as teammates in Dota 2 7.41f, from ranked matches.
In Dota 2 7.41f, Crystal Maiden and Io win 50.22% of ranked matches when playing on the same team, over 13,253 matches.
Keeping a core active on the map gets a bit easier with this pairing. Crystal Maiden's Arcane Aura provides a constant source of mana for Io, a hero that often struggles with it. This lets Io use Overcharge and other abilities more freely to support his tethered carry, accelerating their farm and reducing their downtime. In fights, a well-timed Tether can also pull Crystal Maiden to safety, potentially saving a Freezing Field channel from being interrupted. The lane itself can be fragile since both heroes are easy targets, but the global mana support from Crystal Maiden gives Io's chosen partner a consistent resource advantage throughout the game.
How this pairing performs across skill brackets — the duo's team win rate in recent ranked matches, split by average match rank. Ranks with too few recent matches are omitted. These rows use the last 30 days of quality-filtered ranked matches, all patches in that span combined — a wider window than the patch-scoped count above, so the per-rank match totals can exceed it.
| Rank | Team win rate | Matches |
|---|---|---|
| Herald & Guardian | 46.06% | 165 |
| Crusader & Archon | 54.03% | 533 |
| Legend & Ancient | 50.84% | 478 |
| Divine & Immortal | 50.97% | 155 |
This duo's team win rate in each recent balance patch — whether the pairing is trending up or down. Patches without enough matches are omitted.
| Patch | Team win rate | Change | Matches |
|---|---|---|---|
| 7.41f | 50.22% | ▲ +1.0pp | 13,253 |
| 7.41e | 49.21% | ▼ -2.4pp | 54,987 |
| 7.41d | 51.58% | ▲ +0.4pp | 36,578 |
| 7.41c | 51.14% | — | 13,787 |
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Data updated Oct 5, 2026.