SNIPER - THE PERMA-BASHER DWARF

This is full of misleading information, very cost ineffective and basically will ruin a game for your teammates assuming equal skill level between your team and opponent team.

Sniper needs a lot of free farm for this build, so team will have to endure a 4v5 game while you farm, and in return they will get a very ineffective carry (and I say carry only because you'd have MKB).

I'll try to explain it in simple terms, so even people who upvoted this guide can understand.

1. Illusions don't bash (I mean bash from MKB and basher, Headshot passive propagates to illusions), and they only get dmg from your stats, not from direct +dmg on your items (like mkb), so your mkb/basher has no synergy with manta whatsoever. They have Headshot passive, but when you get mkb/basher (so they get it too), their 'fake bash' will even interfere with your bashes.

2. Auras don't work on illusions, neither does lifesteal, so no, contrary to what this guide says, manta illusions do not benefit from Assault Cuirass/MoM, neither armor aura and IAS aura, nor lifesteal and IAS from MoM.

3. Sniper is an Agi hero, that means high armor but low HP, so if you want survivability, getting armor (assault cuirass) over HP is, uh, not a smart thing to do, especially considering you go MoM and get zero HP items. Nukers are going to be a huge problem for this sniper, and most heroes in DOTA have nukes.

4. Good luck farming all that gold without any escape mechanism (and with MoM!), heroes like bounty hunter, pudge or antimage are among the most picked ones, so you will face them more often than not, and will basically be some free gold for them.

5. You say you've played this build in original DotA. The problem is that bashes on ranged heroes didn't stack at all there, not even bonus damage (which does stack in DOTA 2), so while this build is bad in DOTA 2, it was even worse in DotA.

6. Not leveling shrapnel even once mid-game is a bad move - even going by your idea of perma-bash, shrapnel slow really helps to 'catch' the enemy and gives you more chances to land some bashes on him. Also, you have 5 points in Shrapnel in your build.

I could go on, but I think my point is clear here, and I've stated some proofs to back it up.
Guides like these lead to snipers feeding the enemy team and blaming their own team for 'not protecting' them while not even having any escape items.

The only way you would win with this build is by enemy team being even worse and letting you do that. But I saw Skeleton King with three bucklers / Tinker with battlefury / Pudge with basher being on the winning team, that doesn't mean they were useful in the least and led their team to victory, they were carried by their team. And sniper is supposed to carry, not be carried.

I'm not against fun builds, I experiment a lot myself, but when you write a joke build, state so in the description, or inexperienced people will actually consider this build viable (and manta+basher snipers are rarely fun to have in team).

P.S.: I don't mean to be harsh and I'm not picking on you, just saying that you need to do some research of game mechanics (like illusions' bash) before misleading new players.