Medusa/Counters

Bad against...

 * Phantom Lancer with will very quickly burn Medusa's mana, making her  significantly less effective.
 * 's 1 second invulnerability can be used to dodge medusa's petrification from, as well as.
 * You must be in as the petrification takes place while facing medusa.
 * Phantom Lancer's illusions outnumber Medusa's targets from, likely shielding your team in the process.


 * 's on level 4 burns 38,5% of 's mana every 4 seconds if Medusa only increases her mana pool with Intelligence Icon Int.png. Additionally, 60% of the  damage gets mitigated by, burning even more mana.
 * and is uncontrollable damage, possibly proccing . However, they do not target an invisible Nyx.
 * lacks single target damage, making Nyx with extremely hard to deal with if Medusa is your main damage.


 * Anti-Mage's burns Medusa's mana easily, especially when coupled with a.
 * Can easily initiate on Medusa with, burning her mana or forcing her to use.
 * is effective against Medusa's big mana pool and mana usage, presenting a huge hazard to Medusa's allies around her since her still gives her some protection if she has mana.


 * Many of Invoker's spells are especially dangerous to mana-reliant right clickers like Medusa.
 * EMP is a large Mana burn nuke which can hit Medusa's Mana shield with enough damage to lose even more mana.
 * Deafening Blast disarms medusa's ability to deal pseudo-AOE damage during teamfights.
 * Cold Snap allows the opposing team to repeatedly stun Medusa in short succession, preventing her from successfully casting her ultimate due to its long cast time.


 * Juggernaut is immune to Medusa's arrows and spells when Omni-Slashing.


 * Medusa Is especially vulnerable to Essence Shift, as both Strength and Intelligence contribute to her effective HP.


 * Sniper can outrange both Medusa's arrows and Stone gaze, allowing him to lock her down during a teamfight.

Others

 * Riki
 * Meepo

Items

 * burns away Medusa's effective HP.
 * provides mana burning summons, and Medusa is especially vulnerable to getting hit with Last Will.
 * Heaven's Halberd disarms Medusa's Split shot effectively.
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Good against...

 * As we've seen the era of Troll Warlord, Sniper, Medusa and etc... in Dota Asia Championship, Pro players picked Medusa to counter Troll Warlord. Even if Troll Warlord can farm Black King Bar, he is still nothing in front of Medusa.


 * Medusa's Split shot allows her to focus on killing the tombstone while still dealing damage to the enemy heroes, or simply ignore the tombstone and allow her split shot to prevent the zombies from building up.


 * Mana shield effectively counters Reaper's Scythe, as it can tank 60% of the damage. With sufficient mana, Medusa can survive the Scythe at 19%/22%/24%, and Agh's only raises the killing threshhold to 28%.
 * Heartstopper Aura does not chip away at Medusa's mana.
 * Necrophos has a movement speed equal to Medusa, and is easy to chase down with a slowing item in Medusa's inventory.


 * Enchantress often has a small army of neutral creeps, allowing Medusa to hit her with a later bounce of her Mystic Snake.
 * Enchantress passive Untouchable is easily avoided by Medusa. Simply target another enemy hero or creep, and let split shot hit her.


 * Reason

Others

 * Heroes which rely on Illusions to deal damage, such as Chaos Knight and Naga Siren. Her Ultimate pops them, and even without it her split shot allows her to deal with a group.
 * Heroes which rely on summons. A few strong summons, such as with Lycan or allow Medusa to bounce her Mystic Snake between them to hit the hero for additional damage. Many weak summons, such as Broodmother or Lycan, force the group to tank Medusa's split shot.
 * Heroes which rely on BKB to survive teamfights.

Works well with...

 * Deals area damage with ultimate and can stun/disable to cast Stone Gaze and make it easier to freeze enemy heroes


 * Berserker's Call can force enemies to face Medusa during herStone Gaze.


 * Drow's Precision Aura amplifies Medusa's Split Shot.
 * Drow's midgame strength allows Medusa to farm safely, then take the lead once Drow's relative strength drops in the late game.


 * During teamfights, casting Disruption upon Medusa creates a pair of illusions with Split Shot and 75% of her base damage.
 * Shadow Demon can stack 2-3 jungle camps at the same time, speeding up Medusa's farming phase.
 * Stoned enemies are immune to magical damage, but Shadow Poison can still build stacks during the Stoned phase.


 * Reason

Others

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