Shadow Fiend: Triple Raze
It may be hard to believe, but Shadow Fiend can actually land a triple Shadow Raze on an enemy hero just by standing on the same spot. Finding the right spot is a bit tricky but becomes second nature with practice. Here's a short GIF showing the triple Raze.
Easy Souls for Shadow Fiend
Shadow Fiend can get souls from denying allied units. You may have seen many pros abusing this in the fountain at level 1 by denying Clockwerk cogs. It takes 2 hits to destroy at level 1, so plan with your team how you can effectively max your souls before the laning stage even starts. You can also do this same trick with Venomancer wards. Have your ally Venomancer put his Plague Wards in Roshan. Let Roshan hit them once, and then SF can deny them for easy souls.
Alchemist Ultimate Disjoints Projectiles
A rarely-used feature of Alchemist's ultimate Chemical Rage is that when activated, it will disjoint any existing projectiles. For example, you're an Alchemist farming a lane, and then you see a Wraith King blink near you and use Wraithfire blast. Just pop Chemical Rage and you will simply dodge the projectile and avoid getting stunned. In the past, Metamorphosis and Shapeshift also disjointed projectiles but no longer do so in the current Patch 7.02.
Abilities that Save you from Disruptor's Glimpse
Getting glimpsed from a long distance into your impending doom is no fun. Luckily, there are a handful of abilities that will ignore Glimpse from affecting you. These abilities basically make the target invincible for a short time and can dodge Glimpse. Note that Ball Lightning, Waveform, Time Walk, and Eul's Scepter will not save you from Glimpse, even though they make you invulnerable for most things in the game.
1. Sleight of Fist
2. Life Break - Huskar is magic immune during the duration
3. Blade Fury, Rage, Repel, Supernova - You become magic immune
5. Burrowstrike - Time it perfectly
8. Mirror Image
11. Rare instances with Rolling Boulder and Timber Chain - If they connect or are going to connect before Glimpse finishes, you will teleport back to where you were trying to go.
Items that will save you from Glimpse are BKB and Manta Style if timed perfectly.