Bloodseeker/Counters

Bad against...

 * Abaddon's makes him nearly impossible to gank.
 * and prevents Bloodseeker from gaining his Thirst bonuses.


 * prevents Bloodseeker from replenishing his health by finishing off enemies.


 * allows Ember Spirit to escape while Ruptured.


 * negates Rupture's damage.
 * prevents Bloodseeker from running down and picking off weak enemies during teamfights.


 * makes it very difficult for Bloodseeker to gain his Thirst bonuses.
 * Rupture rarely kills Medusa through.


 * makes it very hard for Bloodseeker to kill Morphling, or gain his Thirst bonuses.
 * is one of the few movement abilities that ignores Rupture's damage.


 * near invulnerability denies Bloodseeker the bonuses from Thirst, preventing him from gaining the upper hand in teamfights.
 * 's pure damage makes it hard for Bloodseeker to pursue enemies, and prevents him from replenishing his health by finishing off enemies.


 * Storm Spirit is invulnerable during, allowing him to zip away from any ganking attempts with Rupture.
 * also prevents Bloodseeker from chasing down an injured Storm Spirit, or catching him in Blood Rite.


 * Well planted Land Mines can lure Bloodseeker to his death during ganking attempts.


 * will repeatedly stun Bloodseeker in a one-on-one fight.
 * blinds Bloodseeker, causing him to miss 60% of the time, and therefore reduces his ability to gain the upper hand in teamfights.


 * Damage reduction from prevents Bloodseeker from killing targets and gaining his Thirst bonuses.
 * 's area of effect catches Bloodseeker easily, negating his speed bonus during teamfights.
 * allows Underlord to transport any allies who may be ruptured to the fountain, rendering it useless

Others

 * Heroes with high armor and durability can be exceptionally hard for Bloodseeker to bring down: ,
 * Heroes with illusion and clone abilities may confuse Bloodseeker, causing him to waste time in fights:, ,
 * Heroes with area heals prevents Bloodseeker from bringing enemies low, and therefore deny him his Thirst bonuses and health return: ,
 * Heroes with disables that go through spell immunity can end Bloodseeker before he has the chance to do anything: ,

Items

 * will often prevent Bloodseeker's ganking attempts, as he has no disables to interrupt it.
 * can reflect damage from Rupture. Strength heroes with mobility skills such as or  can reflect large amounts of damage when Ruptured.
 * prevents Rupture, although Bloodseeker can use Bloodrage first to break the passive.
 * lowers Bloodseeker's damage, making it difficult for his Thirst bonus to kick in.
 * 's health regeneration reduces Thirst's effectiveness.

Good against...

 * Blood Rite prevents Anti-Mage from escaping with.
 * will trigger the damage from Rupture.


 * is not enough to outrun Bloodseeker, and is detected by Thirst.


 * Huskar is often at low health, providing large Thirst bonuses.
 * Blood Rite and Rupture deal pure damage, which is unaffected by.
 * can trigger Rupture's damage.


 * Every Meepo clone adds to Thirst's bonuses.
 * Bloodseeker can chase down retreating clones when Meepo tries to cycle weaker clones away from combat.


 * Thirst detects Riki whenever his health is low.
 * Rupture does large damage when Riki uses.


 * Thirst prevents Slark from healing with.
 * Rupture will deal damage during.


 * Sniper's lack of mobility and escape mechanisms makes him one of the easier heroes for Bloodseeker to gank.


 * Rupture and Blood Rite locks down Timbersaw, preventing him from escaping with . However, Timbersaw may reflect a good deal of damage with.


 * will trigger extra damage from Rupture.
 * 's invisibility is detected by Thirst.


 * triggers the damage from Rupture.

Others

 * Heroes with invisibility will be detected by Thirst:, , , ,
 * Heroes with fast movement abilities will suffer huge damage when afflicted by Rupture.

Works well with...

 * is very helpful when Bloodseeker is ganking, as Rupture discourages the target from moving out of Ice Blast's impact radius.


 * Thirst's speed and detection allows Bloodseeker to efficiently chase down ed foes and claim their bounty.


 * 's initiation increases the bonuses from Thirst.
 * Earthshaker's many stuns help lock down targets for Bloodseeker.


 * Thirst helps Invoker land easy s on low health enemies throughout the game.


 * helps Io find and relocate to weak enemies by himself or with his allies.
 * Overcharge from Io makes Bloodseeker tankier.
 * not only heals Bloodseeker but slows his prey as well.


 * Thirst helps Nature's Prophet finish off retreating enemies with and.


 * Initiations with and  significantly increases the bonuses from Thirst before a fight.
 * Bloodseeker can also increase Queen of Pain's nuke damage with.


 * compounds damage taken by the enemy and works at any distance, therefore greatly increasing Thirst's bonuses and helps Bloodseeker chase down fleeing targets.


 * Bloodseeker can increase Zeus' damage with, which can greatly lower the enemy's health with before an engagement.
 * Zeus' magical nukes greatly increases the bonus damage from Thirst.


 * ing enemies that are affected by will certainly kill them.

Others

 * Heroes with powerful nukes will quickly increase the bonuses from Thirst:, , , ,
 * Heroes who can move enemies over long distances while Ruptured:
 * can Ruptured enemies to their deaths,  can  them,  will  them back,  can  them, can  and drag them.

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