Dark Seer/Counters

Bad against...

 * Dark Seer's strength lies in his high-mana cost skills. Gets rid of his mana (ergo, he can neither use  to escape, nor any of his offensive skills to fight).


 * makes Dark Seer not deal any damage with his skills to.


 * is very dangerous to Dark Seer, because even if he tries to escape with Surge he will lose all of his mana and get stunned.
 * makes landing the +  combo harder.


 * can remove Dark Seer's Ion Shell and/or Surge by casting . This makes any gank attempt on Dark Seer in the laning phase very likely to succeed.
 * prevents all magical damage that comes from Dark Seer's abilities.


 * A Sniper who is somewhat competent at positioning will never be hit by any of Dark Seer's spells thanks to.

Others

 * Dark Seer relies on surge for most of his mobility, so he's not very vulnerable to slows, but much more to root effects and walls or psedo-walls such as 's or 's.
 * Dark Seer's only disable is Vacuum. Though he starts off with high armor and health, he'll eventually have a hard time dealing with high mobility heroes such as or, either killing them or escaping from them.

Items

 * prevents Dark Seer from using and running away.
 * can deal much damage to Dark Seer if he uses his on a creep.
 * and  can purge off Ion Shell and Surge.

Good against...

 * is a very powerful weapon against 's Spiderlings. It makes her laning much harder.


 * destroys 's protection stacks in short time.


 * can be destroyed fast with.

Others

 * Heroes that rely on illusions will suffer against, which kills them very quickly: , , ,.
 * Heroes that rely on illusions typically spawn very strong illusions inside your Wall of Replica that you should use against them or their team.
 * Melee heroes have a hard time laning against Dark Seer because of

Works well with...

 * on Bounty Hunter allows Bounty Hunter to do a lot of damage while staying invisible.


 * gets along with for the following reason -  synergizes well with  and both heroes' ultis.


 * on Riki allows him to do a lot of damage whilst staying invisible.


 * Since 's can stun enemies in a small area, Dark Seer can use his  to pull enemies into the spot allowing  to hit all enemies at the very spot.
 * Sven can kill heroes that got pulled together by very quickly due to his
 * Surge is a partial solution to Sven's early game lack of mobility allowing him to close in on his targets with ease.


 * provides a great setup for Dark Seer to run heroes down with.

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