Push lanes with an ally, especially destroying towers.
Casts ion shell to melee heroes whenever they are attacked by melee heroes.
Block your enemies path or route whenever your dying ally is fleeing. Recommended to do this when the enemy has a long range stun/disable or if you have no mana for surge/vacuum.
Enemy heroes who channel their spell is a must routine to counter using vacuum. Just be careful to heroes like vol'jin, Enigma and Nevermore, since they can easily kill you when you are not quick at casting vacuum
Heroes who rely in their ultimate is a must for them. So cast vacuum whenever you're with them.
Whenever you're juking, dont use vacuum, cause it destroy trees, instead, find a spot where you're enemy will lose sight of you when you vacuum him, so he can hardly find and chase you.
Juking is the most hardest part to master, here's a simple trick, when you're fleeing from an enemy, make the enemy to lose sight from you by disapearing from the fog. The trick is hiding behind trees, walking to ramps, and walking with high speed.
When your team have no pusher and one of your tower is getting ruined, then dont defend the tower, instead, stay with an ally, or if it's important to defend, then bring an ally to defend with you.
Use customkeys generator when you feel clumsy at keyboard posistioning. I recommend to take the QWER keys. Here's the link: DOTA Customkey Generator
Note: After downloading the file, put it in the warcraft folder, and nothing else!
Practice with AI as much as possible. Here's an AI map, http://www.playdota.com/forums/45209...-gagarin-rev2/
Whenever a nearby dying ally is fleeing from the enemy chaser, simply cast surge to the fleeing ally
Whenever a neaby dying ally is fleeing from the enemy chaser, alternatively cast vacuum to the enemy to the opposite direction which wherever ally is facing.
Dark seer has high armor, you dont get used to shield yourself from the ally to resist the harass of the enemy.
Casts arcane boots as much as possible, even you have full mana, the important is you're using it, cause it has low cooldown.
Spam surge and vacuum during ganks. period.
Dont gank alone, bring an ganker ally.
When ganking with an ally, be logical. It means you need to be supportive rather than DPSing in ganks.
Dont last-hit when the carry goes to last-hit cause he needs to farm. Unless he is disabled, then surge yourself, wear ion shell to your body, and chase the enemy like no before.
Casts your ulti as much as possible at clashes, not ganks.
Dont buy DPSing items. Dark seer is not a DPSer
Pick Dark seer when it is really necessesary to synergize with him.
Heroes who will love and synergize with him are:
- Nevermore, Rylai, Rhasta, Enigma, Jakiro, Lich, Crixalis, Magnus, Leviathan, Venomancer, Phoenix, Rattletrap, Tauren chieftain, Pit lord, Queen of pain, Warlock, Techies and Invoker.
It's more recommened to pick Dark seer when one of these heroes mentioned above is picked in game.
Dont sit duck like a camper, when there's too many enemies when pushing in one lane, then jungle and wait till the line finshes off.
If you're sure that one of the enemies are going to gakn any lane, then plant ward near or top of the rune spot, just near of it.
Also, if heroes like nevermore needs to runewhore, then do the same above.