Heroes' Vision (who just can't see you?)

Shared Vision

Allied units share vision around the map. For example, if a Druid is chasing a Hero that is not in a lane, you can see where the Hero is as long the creep is still there and alive, and when it dies, you can still see the place as the death animation plays and turns to a corpse. You share sight with allied creeps, buildings/towers, Heroes, summons, and illusions.

Hero Sight Range

The Sight Range of most of the heroes is 1800(day) / 800(night).

There are some exceptions:

• Aiushtha, Enchantress: 1800 / 1200
• Rooftrellen, Treant Protector: 1800 / 1200
• Gondar, Bounty Hunter: 1800 / 1000
• Traxex, Drow Ranger: 1800 / 1700
• Mirana Nightshade, Priestess of the Moon: 1800 / 1200
• Puck, Faerie Dragon: 1800 / 1200
• Leshrac the Malicious, Tormented Soul: 1800 / 900
• Balanar, Night Stalker: 1200 / 1800
• Meepo, Geomancer: 1800 / 1800
• Alleria, Windrunner: 1800 / 1200

Skills which grant enemy hero sight

These skills "mark" an enemy unit for a period of time.

• Slithereen Guard's Amplify damage
• Dwarven Sniper's Assassinate
• Spiritbreaker's Charge of Darkness
• Alchemist's Unstable Concoction
• Bounty Hunter's Track
• Spectre's Haunt
• Lord of Olympia's Thundergod's Wrath
• Bloodseeker's Strygwyr's Thirst

Skills which give extra sight at a certain place

• Summoned units
• Dwarven Sniper's Scattershot
• Goblin Techies's Land Mine, Stasis Trap, Remote Mines
• Templar Assassin's Psionic Trap
• Treant Protector's Eyes in the Forest
• Broodmother's Spin Web
• Goblin Clockwerk's Rocket Flare
• Spectre's Spectral Dagger
• Priestess of the Moon's Elune's Arrow
• Keeper of the Light's Illuminate

Items which give extra sight

• Bloodstone if charged, gives sight of the place where the owner of the item died.
• Sentry Ward: 200/ 200. (700/ 700 True Sight range)
• Observer Ward: 1600/ 1600.
• Animal Courier / Flying Courier.
• Shiva's Guard: The projectiles have 800/600 vision.