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Many hands make light work.
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Bad against...[]
- Dark Seer's strength lies in his high-mana cost skills. So Mana Break can be a great nuisance for him, since it can reduce his mana and prevent him from casting his spells.
- Mana Void can deal a lot of damage if Dark Seer spent a lot of mana on his abilities.
- Rupture can deal a lot of damage to either a surged Dark Seer or his allies and prevent the target from getting into position.
- Flame Guard makes Dark Seer not deal any damage with his skills to Ember Spirit.
- X Marks the Spot prevents Dark Seer or his allies from escaping with Surge.
- Spell Steal will easily steal all abilities from Dark Seer.
- Fortune's End dispels Ion Shell and Surge, making any gank attempt on Dark Seer in the laning phase likely to succeed.
- Fate's Edict prevents all magical damage that comes from Dark Seer's abilities.
- Fortune's End dispels Ion Shell on creeps, which Dark Seer relies on to farm and zone.
- A Sniper who is somewhat competent at positioning is hardly going to be affected by any of Dark Seer's spells thanks to Take Aim.
- However, an illusion of Sniper made with Wall of Replica is extremely powerful, and hard to deal with.
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 pseudo-walls such as Disruptor's Kinetic Field or Slark's Pounce.
- 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 Weaver or Queen of Pain.
- Dark Seer's Wall of Replica is not as effective against heroes with low physical/base damage since damage of enemy illusions spawned from Wall of Replica is % based hero damage.
Items[]
- Orchid Malevolence prevents Dark Seer from using Surge and running away. However, skilled Dark Seer can counter this with issue with Guardian Greaves, a common item on Dark Seer.
- Blade Mail can deal much damage to Dark Seer if he uses his Ion Shell on a creep.
- Eul's Scepter of Divinity can dispel Ion Shell and Surge. Later it can be upgraded into Wind Waker which can be used to escape from Dark Seer.
- Black King Bar will cause Dark Seer to struggle greatly against heroes who build it, and his only tools to counter it are Wall of Replica and a defensively used Surge for escaping.
- Radiance's damage over time can clear waves of Dark Seer's illusions from Wall of Replica and will prevent him from using Blink Dagger to escape or initiage. However, Normal Punch from Aghanim's Scepter has true strike and can pierce through evasion it gives.
Good against...[]
- Ion Shell is a very powerful weapon against Broodmother's Spiderlings and makes her laning much harder.
- Dark Seer's Vacuum and Ion Shell can clear a wave of Chen's Creeps effectively.
- Surge applies haste movement and negates the slow from Penitence, allowing Dark Seer to easily escape from Chen and his creeps.
- Dark Seer's full combo from Dark Seer's Vacuum, Wall of Replica and Normal Punch from Aghanim's Scepter can often kill Chen or any of his allies before he can save them with Hand of God.
- Ion Shell destroys Refraction's protection stacks in short time.
- Surge ignores the massive slow from Psionic Trap.
- Living Armor can be destroyed quickly with Ion Shell.
- Dark Seer can take great advantage of Divided We Stand by putting an Ion Shell on a clone in order to harass them effectively.
- Vacuum can take a single Meepo and disable him for Dark Seer and his teammates to take out.
- Dark Seer's Vacuum and Ion Shell allows him to clear a wave of Terrorblade's illusions.
- Because Terrorblade often builds items that require Ultimate Orb like Manta Style and Eye of Skadi, Dark Seer can create a very strong illusion of Terrorblade with Wall of Replica and Normal Punch from Aghanim's Scepter.
- If Dark Seer can use Vacuum to help teammates land their AoE abilities, Terrorblade will be quickly killed before he even gets a chance to use Sunder.
- Venomancer is a low health hero and low range hero who is easy to harass with Ion Shell on a creep in the early game.
- Venomancer depends entirely on all his slows to keep distance or chase, but since Surge ignores slows, it is nearly impossible for Venomancer to hunt or run away from Dark Seer or his surged teammates.
Others[]
- Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: Beastmaster, Broodmother, Enigma, Nature's Prophet, Visage, Warlock, Wraith King.
- Heroes that rely on illusions typically spawn very strong illusions inside Dark Seer Wall of Replica that he can use against them or their team: Phantom Lancer, Chaos Knight, Naga Siren, Terrorblade.
- Melee heroes have a hard time laning against Dark Seer because of Ion Shell.
- With Normal Punch from Aghanim's Scepter, Dark Seer can gain an advantage against heroes who rely on evasion as Normal Punch has true strike: Phantom Assassin, Windranger, Hoodwink.
Items[]
- Ghost Scepter and Ethereal Blade do not offer protection against Dark Seer's magical damage from Vacuum and Ion Shell.
- Butterfly and Radiance's evasion gain becomes insignificant once Dark Seer buys Aghanim's Scepter that will grant him access to Normal Punch.
Works well with...[]
- Ion Shell on Bounty Hunter allows Bounty Hunter to do a lot of damage while staying invisible.
- Echo Stomp synergizes well with Vacuum and both heroes' ultis.
- Vacuum allows Enigma to suck more heroes into the black hole. Furthermore, Wall of Replica can deal good damage on people caught in Black Hole, and allows the illusions to attack the enemy heroes without restraint. Surge also allows Enigma to initiate more easily, and Ion Shell can deal good damage on people stuck in Black Hole.
- Ion Shell on Riki allows him to do a lot of damage while staying invisible.
- Dark Seer can use Vacuum to pull enemies into the spot allowing Storm Hammer to hit all enemies.
- Sven can kill heroes that got pulled together by Vacuum quickly due to his Great Cleave
- Surge is a partial solution to Sven's early game lack of mobility allowing him to close in on his targets with ease.
- Venomous Gale provides a great setup for Dark Seer to run heroes down with Ion Shell.
Others[]
- Vacuum is especially good with powerful teamfight spells: Arena Of Blood, Chaos Meteor, Berserker's Call.