Gameplay
 Io is a unique hero that provides boosts to its allies by linking to them. While relatively powerless alone, Io”s powers amplify with the right heroes. It regenerates allies through  Tether, and buffs their health regen and attack speed with  Overcharge. But most importantly, Io can  Relocate an ally to any point on the map, setting up perfect ganks or saving them from certain death. Đang xem: Cách chơi io dota 2 | |
| Pros | Cons |
| Not item dependent.Global mobility.Strengthens ally”s durability and attack speed.Low mana costs. | Dies easily.Requires precise coordination with teammates.Vulnerable without a partner. |
Support
Io excels at healing and buffing allies with Tether and Overcharge. Therefore, Io should acquire healing items like
Bottle or
Urn of Shadows to come online quickly. Throughout the game, look out for lone targets to initiate with Relocate ganks, using Spirits to help bring them down. In the mid and late game, Io should spend most of its time staying with a carry to enhance their capabilities or save them from death. In the late game, with talent that orders Io to attack tethered ally”s target, Io can build items like
Desolator to increase damage output against enemy heroes and buildings.
Carry
With Helm of Dominator, IO is able to farm at a fast speed to get to his Aghanim”s Specter, which increases his damage output drastically. He can also tether to a siege creep to take down buildings exceptionally quick. Grabbing a Maelstrom later into the game with the Attack Tethered Ally”s Target Talent grants a substantial amount of DPS that may be enhanced with Mjollnir, Monkey King Bar, Desolator, and even more options. Heart of Tarrasque is still exceptionally good as it grants a crazy amount of health regeneration for tethered allies later into the game.
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Ability Builds
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Talents
| Attack Tethered Ally”s Target | +700 Health |
| -25s Relocate Cooldown | +60 Spirits Hero Damage |
| 10% Spell Lifesteal | +325 Spirits Max Range |
| +35 Damage | +4 Health Regen |
Notes:
Tips & Tactics
General
Io works best with a partner with whom you share communication.Io is extremely weak and cannot do much alone. Its utility comes entirely from boosting teammates.Usually, Io should sacrifice its life to save another teammate.As a general rule, Io works best with a carry who has mobility and health and/or mana regeneration issues; see the Counter page for some suggested Io buddies.Tether heals allies for more than the healing done to Io itself. Thus, Io should buy items like
Tango or
Enchanted Mango in the laning phase and
Urn of Shadows or
Arcane Boots later on to take advantage of Tether healing.Alternatively, teaming up with allied heroes who have healing abilities to amplify their effects with Tether.In the early game, tell your lane partners to use healing items and abilities on Io to gain more with Tether.Io does not have to turn to attack, move, or target items and abilities.Early on, Tether and Overcharge provide enough sustain and buffs for Io and partner to dominate their lane. Thus, play with aggression and look to collect kills.
Abilities
TetherUse Tether to buff target ally with Overcharge or to use Relocate with them.Use Tether on allied heroes to get to their side with great speed, as it latches from a considerable distance.Tether to an ally, then use healing items on Io to gain more benefit for that ally, capable of regenerating both health and mana.Though Tether lasts forever, it still has a cooldown, so Io cannot keep breaking and forming Tether.Tether sets Io”s movement speed equal to the target”s, including any bonuses to movement speed.Io does not get slowed if its tethered target is slowed. However, Io willl be slowed if the enemies apply the slow directly to Io.Exercise caution when latching to target with Tether from long distance to save them with heal and Overcharge; if the enemies have enough damage and disables, they can overpower both of you and collect two kills instead of one.When escaping with tethered ally, Io may choose to break the Tether and lure the enemies away from the ally, then it can use Tether on the target again, taking advantage of the ability”s long cast range and high pull speed.Io cannot level up Tether when it is using the ability.Tether”s link becomes jittering at long enough distance, indicating that it will soon break if Io keeps moving farther away from the target.
SpiritsDuring the early game, use Spirits to harass and keep enemies away from the creep waves.Use Spirits over trees when pushing to detect enemy defenders hiding inside.Use Spirits to stack and farm multiple jungle camps at a time, boosting gold income of Io and its team.At higher levels, Spirits has longer duration than cooldown.Try to time fights and Relocate ganks as the abilitiy is coming off cooldown, giving Io two sets of Spirits to boost damage output and disable.Spirits do not explode when colliding with creeps, but still deal minor damage, making it a decent farming ability.Spirits explode and deal burst damage when they expire; with timing, Io can keep clearing creep waves and neutral camps.Io cannot level up Spirits when it is using the ability.Upon cast, Spirits move to max distance away from Io.Spirits Movement allow Io to move Spirits closer to it or farther away.
OverchargeOvercharge increases attack speed to help Io”s carries output damage in fights.The bonus HP regeneration of Overcharge helps Io and tethered partner survive.The attack speed bonus works well with siege creeps when pushing towers.
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RelocateUse Relocate anywhere on the map with a tethered ally to gank enemies.To save an ally away from the enemies, target Relocate at a safe spot, e.g. home fountain or next to other allies, then use Tether on target.Relocate saves usually result in Io”s death when it returns to the original location.However, Io can break Tether before that happens to not bring back the ally.You can use Relocate from a safe spot, then bring back an injured ally upon returning. Though, the 12 second discrepancy between Relocations does not always make this tactic viable.Use Relocate to reach a distant ward spot; enemies should have a hard time figure out where you plant wards as you hopefully have not crossed their vision.
Items
Starting items:
