Sniper is a late game, hard carry, that prefers to destroy his foes from afar, he is a ranged agility hero, using long range and his slows to his advantage.
Shrapnel - Creates an 450 unit radius that deals 12/24/36/48 damage per second for 10 seconds it also slows any enemy units inside by 15%/20%/25%/30%
Cost: 15 Mana
(You have 3 charges, each charge restores every 40 seconds)
Headshot - Has a 40% chance to deal 15/40/65/90 bonus damage, it also gives a 100% movement slow and 100 attack speed slow for 0.5 seconds.
- Increases Sniper's attack range by 100/200/300/400
(At 300 & 400 you are outside of a tower's attack range)
Assassinate - Sniper locks on to his target and after 1.5 seconds sends out a high damage bullet that deals 355/505/655 damage, and mini stuns the target (0.01 second stun) it can be cast from 2000/2500/3000 units away.
Cool Down: 20/15/10
Mana Cost: 175/275/375
I go with Diffusal Blade over Desolator because the Desolator even though might sound good with its -7 armour on hit affect, it isn't that much of a boost of damage.
Riki with 7 armour -7 = 0 armour that is a 29.6% more damage but a Riki with 14 armour -7 = 7 armour resulting in only 16.1% bonus damage. And in late game armour is key against sniper, so instead of going armour reduction, I just get a sure 35 bonus damage.
Unless they run out of mana, but if they run out of mana well then they can't do anything see Win - Win
Because Sniper is usually the hardest carry on a team (Apart from Faceless Void), This means that your team should well to put it shortly (Unless you aren't doing well) have to die for you its better for a low level Blood Seeker to die than a high level "about to get Diffusal Blade Sniper".
If the enemy team has right clickers (Mostly Heroes that use there basic attack to deal damage) examples are, Ursa, Drow ect.
This allows you to have a better chasing/escaping chance because the faster you attack, the more procs of Headshot meaning more DPS, more kills more gold.
But if the enemy team doesn't have a Ursa/Drow there really is no need for this, the Diffusal Blade build is better for mana users Lina Lion
Dota 2, instead of having your shot run through a simple formula resulting in 60% of the time you don't get procs.
It runs through a Adding Formula, Which instead of just running through a 40% all the time, it does this.
First Shot - No Proc (40%)
Second Shot - No Proc (80%)
Third Shot - Proc (120%)
Or simply it adds another 40% chance to proc with each hit.
(This does reset after Headshot Procs)
p x c = Chance To Proc (Resets after Proc)
(This is Dota 2's system for ALL Proc chances)
This build, if you know a little how to play and work with Sniper should help you in situations in which you don't know what to do.
I will be updating this, Im publishing this to see if I get a good response :D