Alchemist:
Acid Spray cooldown increased from 22 to 27
Unstable Concoction maximum stun duration decreased from 1.75/2.5/3.25/4 to 1.25/1.75/2.5/3.25
Acceptaple nerf since his 4 second aoe stun was to op for a carry hero and acid spary cd too.
Ancient Apparition:
Cold Feet mana cost decreased from 150 to 90/110/130/150
Cold Feet stun duration rescaled from 1.25/2/2.75/3.5 to 1.5/2.25/2.75/3.5
IceFrog trying to bring it again.
Axe:
Counter Helix chance increased from 17% to 20%
Berserker's Call radius increased to 350
Berserker's Call mana cost decreased from 80/90/100/110 to 80
We'll se more axe picks.
Bane Elemental:
Cast animation time increased from 0.5 to 0.7
Really nice buff, since bane can disable too many heroes: Sleep, grip or reduce carry dmg, and now his hands are too bit slower
Batrider:
Movement speed decreased from 290 to 285
Attack range decreased from 375 to 330
Sticky Napalm turn rate slow rescaled from 70% to 40%/50%/60%/70%
Nice nerf in lane phase but i think the real problem with bat is his jungling power, it is easy purchase a dagger before 10 minuts mark.
Broodmother:
Insatiable Hunger can no longer be purged
Spiderling movement speed increased to from 350 to 375
Spiderling base attack time from 1.35 to 1.0
Spiderite bounty decreased from 16-21 to 11-13
Spiderling bounty increased from 11-13 to 15-20
The problem with broodmama is: her it is not very durable in early phase
Chen:
Base strength decreased by 3
Good, we can kill chen early now.
Crystal Maiden:
Base movement speed increased from 280 to 290
The most waited buff ever??
Dark Seer:
Vacuum no longer stuns enemy units while moving them
Vacuum cooldown increased from 24 to 26
Nice try Ice, but DS still farming too much in early.
Dazzle:
Shadow Wave cooldown decreased from 12/10/8/6 to 11/9/7/5
Shadow Wave bounce radius increased from 475 to 550
Go dazzle, one day you will come to the competitive game.
Disruptor:
Strength gain increased from 1.9 to 2.3
Kinetic Field formation time decreased from 1.2 to 1
Fine and cool.
Doom Bringer:
Int growth from 2.1 to 2.5
Scorched Earth cooldown decreased from 60/55/50/45 to 55/45/35/25
With this buff, doom will get more durable team battle presence, the duration of lvl 4 is 16 seconds, so 9 sec to active again.
Dragon Knight:
Base armor decreased by 1.5
Dragon Tail stun duration rescaled from 2.5/2.75/3/3.25 to 1,5/2/3/3.25
Don't like this nerf, maybe 2 seconds on lvl 1 would be more better.
Enigma:
Added Aghanim's Scepter:
Cast range increased to 300
Enemies in a 850 AoE have their turn rate slowed by 55% and are pulled towards the center of the Black Hole at 100ms if they are facing it
Duration increased from 4 to 4.5
Apocalypse!!??
Furion:
Treant bounty increased from 21-26 to 20-35
Treant sight range decreased from 1200/800 to 800/800
Clearly Post ti3 change..
Goblin Shredder:
Added Aghanim's Scepter
Increases Chakram speed from 900 to 1000
Allows Goblin Shredder to latch to his Chakram with Timber Chain
I like this but it seems that maybe he will be nerfed in 6.80.
Gyrocopter:
Flak Cannon now only deals Gyrocopter's base damage
Flak Cannon maximum attacks increased from 3/4/5/6 attacks to 4/5/6/7
Call Down mana cost increased from 125 to 200
Facepalm and no more gyro.
Huskar:
Added to Captain's Mode!
Base armor decreased by 1
You can now deny yourself with the self-damage of Burning Spears.
Burning Spears can no longer be used while in Ethereal form.
Don't know about this hero perfomance in competitive gaming. Solo mid, offlaner or trilane carry?
Io:
Tether maximum radius rescaled from 900 to 500/550/600/750
Tether movement speed bonus decreased from 17% to 7%/10%/13%/16%
Reasonable.
Lifestealer:
Base armor decreased by 1
Movement speed decreased from 315 to 310
Still op.
Lone Druid:
Spirit Bear bounty increased from 300 to 350
LD nerf is senseless, since he was nerfed in 6.78, LOL. Directly bulldog's nerf???
Lycanthrope:
Howl unit bonus damage increased from 4/8/12/16 to 5/10/15/20
Shapeshift duration rescaled from 18 to 15/20/25
He is still a good late game carry with or without 2 or 7 seconds on his ult. lycan's problem is early game.
Morphling:
Attack range increased from 350 to 380
I expected more from IceF about morph, maybe Morph manacost to 25mp/sec or base atk damage from 37-46 to 40-49, dont think morphling will back to competitive right now but is ok...
Necrolyte:
Base strength increased by 3
Strenght growth from 2 to 2.3
Heartstopper Aura HP loss increased from 0.6%/0.9%/1.2%/1.5% to 0.7%/1.2%/1.5%/2%
Come Necro, we wait for you in competitive.
Nerubian Weaver:
Movement speed decreased from 290 to 280
Good !
Obsidian Destroyer:
Essence Aura base mana bonus removed
Its good to stop OD hard laning presence.
Omniknight:
Purification heal works on magic immune units (damage is still pure and doesn't damage immune units)
Degen Aura reworked:
Radius increased to 400
Slow decreased to 5%/10%/15%/20%
If an enemy unit dies in the radius of Degen Aura, an illusion of them that does 20% damage and takes 450% incoming damage is created for 20 seconds. Illusions have their movement speed fixed at 400 and carry the same level of Degen Aura as Omniknight
Both movement and attack slow of Degen Aura from multiple units now stack
Illusions appear as the fake for both teams
The problem is to kill a hero in this abillity radius
Pandarean Brewmaster:
Thunder Clap cooldown decreased from 12 to 8
Hope another buff for he.
Pugna:
Strength growth from 1.2 to 1.65
Nether Blast delay decreased from 0.9 to 0.5 seconds
Nether Blast cooldown rescaled from 5.5 to 8/6/5/4
Decrepify no longer slows allied units.
Decrepify mana cost decreased from 100 to 65¨
Life Drain slightly reworked:
Pugna can move during the channel with a fixed movement speed of 150. Attacking, using items or getting disabled will still break the channel.
Instant pick?
Puck:
Phase Shift cooldown increased from 6 to 8
Ok, i think we can kill puck now.
Phantom Assassin:
Phantom Strike can be cast on magic immune units.
Base attack time decreased from 1.7 to 1.6
Loda's smileee.

Rikimaru:
Using items and abilities won't reveal Rikimaru in Permanent Invisibility
Movement speed increased from 300 to 310
Dagons from nowhere should be funny.
Rubick:
Telekinesis now ends if Rubick and the targeted unit are moved 675 units away from each other
Spell Steal mana cost increased from 25 to 65
Someone can explain me this telekinesis nerf?
Sand King:
Sandstorm now gives 10%/15%/20%/25% miss chance to enemies in the AoE
Great synergy with his blink/epicenter.
Skeleton King:
Hellfire Blast slow increased from 20% to 25%
If a unit affected by Mortal Strike dies before the end of its duration, Skeleton King instantly regains the passive critical strike and drained health won't be returned.
Reincarnation now stuns units for 1/1.5/2 seconds at the end of the slow.
Auras carried by Skeleton King stay in effect during Reincarnation.
I prefer not to comment this.
Slardar:
Strength growth increased from 2.8 to 3.15
Cooldown decreased from 28 seconds to 25
Sprint can be cancelled by activating it again on its duration
Amplified damage taken from Sprint will always be pure (instead of same damage type)
Amplify Damage cast range increased from 700 to 850
Amplify Damage cooldown decreased from 10 to 10/8/6
Welcome next picked carry hero.
Sniper:
Shrapnel effect delay removed.
Shrapnel mana cost rebalanced from 120 to 75/85/95/120
Shrapnel cooldown decreased from 15 to 12
Headshot stun duration increased from 0.25 to 0.3
If Headshot procs on a unit in the AoE of Shrapnel, the mini-stun will happen twice (damage will be taken from only one headshot)
Assassinate mana cost decreased from 175/275/375 to 150/250/350
Omg, i can learn shrapnel again... :lol:
Spectre:
Desolate radius decreased from 325 to 275
More buff to this terrifying ghost?
Spirit Breaker:
Base armor decreased by 1
Empowering Haste speed bonus rescaled from 6%/10%/14%/18% to 5%/10%/15%/20%
Still won't stop pubstomp.