Tinker/Counters

Bad against...

 * Tinker is heavily reliant on casting his spells and can disable all of his four active abilities.


 * Tinker is fragile and vulnerable against carries like Anti-Mage also, burns away his mana pool and deal bouns physical damage.
 * Tinker's massive mana pool makes deal large amount of damage.


 * will force Tinker not to cast any spells and if not, he will take more damage.
 * deals pure damage and makes quick work of fragile Tinker.
 * causes Tinker to get silenced for 6 seconds after casting a spell.
 * will prevent Tinker to use his spells in team fights, which makes him useless.


 * will dispel 's blind and turns him magic immune for the duration so Tinker cannot damage him.
 * will quickly bring down Tinker due to being so fragile.


 * will dispel 's blind and gives her great attack speed and health regeneration.
 * A smart Legion Commander will choose fragile support heroes for like Tinker and at later stages of game, Tinker cannot survive at the end of Duel's duration and this point makes him useless in team fights.

Others

 * Slark's Pounce shutdown Tinker's escape everyway except he has invisible item like Glimmer Cape or Shadow Blade base item.
 * Mostly Slark build bash item or slow item so he can kill Tinker with little injury. Eye of Skadi, Vanguard, Heart of Tarrasque make him tanky enough for kill Tinker alone.
 * Arc Warden if he isn't hexed, he can kill you even he is silenced with pack of weapons even Tinker has Linken Sphere, it can't handle it all. Otherway, if he can call Tempest Double. Tinker can't fight back.
 * Faceless Void's Chronosphere make Tinker actless and easy to be targeted first.
 * Spirit Breaker can charge to Tinker because Tinker rarely build Linken Sphere and Lotus Orb is disadvantage for this. While Tinker isn't hex you. Tinker is the easy prey.
 * Night Stalker

Items

 * Blademail can reflect a lot of damage into Tinker's HP specially while using March of the Machines
 * Linken's Sphere prevent target aiming from Tinker Laser and his weapons.
 * Black King Bar makes all Tinker's spell and item useless because they are all magical with not penetrating spell immunity.

Good against...

 * Tinker can deal a great amount of damage against Shadow Fiend's low HP at early game while using a good combination of Laser and Heat-Seeking Missile
 * Laser can make Shadow Fiend miss a lot of last hits, disabling his Necromastery


 * Tinker can easily farm and kill Nature's Prophet treants by using March of the Machines
 * It's effective against Nature's Prophet pushing by using Rearm and Boots of Travel


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Others

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Works well with...

 * Faceless Void can help him with the pushing type and his Chronosphere help Tinker kill the stuck enemies.


 * Mark X Spot make Tinker can lure enemy to aim him and when he under attacked. Kunkka will call him back.


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Others

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List of heroes that counter Tinker, and list of heroes that work well with Tinker.