Abaddon2 changes

Curse of Avernus
- Curse duration increased from 4 to 4.5

Aphotic Shield
- Manacost reduced from 115 to 100/105/110/115
Every change in Dota 2 patch 7.21, straight from Valve's official notes: 108 heroes, 29 items and 0 neutral items changed. Hero and item names link to their current stats.
Animal Courier



























Abaddon2 changes
Curse of Avernus

Aphotic Shield
Alchemist5 changes
Chemical Rage
Talents
Ancient Apparition4 changes
Chilling Touch

Ice Vortex
Talents
Anti-Mage1 change
Arc Warden3 changes
Spark Wraith

Tempest Double
Talents
Bane4 changes
Enfeeble

Fiend's Grip
Talents
Batrider3 changes
Firefly
Beastmaster6 changes
Inner Beast
Talents
Bloodseeker1 change
Bounty Hunter3 changes
Shuriken Toss

Jinada

Track
Brewmaster5 changes
Drunken Brawler

Cinder Brew
Talents
Bristleback1 change
Viscous Nasal Goo
Broodmother4 changesTalents
Centaur Warrunner1 change
Retaliate
Chaos Knight5 changes
Chaos Strike

Reality Rift
Chen8 changes
Divine Favor

Hand of God
Talents
Clinkz1 changeTalents
Clockwerk4 changes
Battery Assault

Rocket Flare
Talents
Crystal Maiden3 changes
Freezing Field

Arcane Aura
Dark Willow2 changes
Bramble Maze
Dazzle2 changes
Poison Touch

Shadow Wave
Death Prophet1 change
Disruptor1 change
Doom2 changes
Scorched Earth

Devour
Dragon Knight5 changes
Dragon Blood

Elder Dragon Form
Talents
Drow Ranger1 changeTalents
Earth Spirit3 changes
Rolling Boulder

Boulder Smash
Talents
Earthshaker1 change
Fissure
Elder Titan1 changeTalents
Ember Spirit2 changes
Sleight of Fist
Enchantress3 changes
Enchant
Enigma1 change
Midnight Pulse
Faceless Void3 changes
Time Dilation
Talents
Grimstroke3 changes
Phantom's Embrace

Ink Swell
Gyrocopter1 change
Huskar4 changes
Berserker's Blood

Life Break
Talents
Invoker3 changes
Exort
Talents
Io10 changes
Tether

Overcharge

Relocate
Talents
Jakiro2 changesTalents
Juggernaut5 changes
Omnislash

Healing Ward
Talents
Keeper of the Light2 changesTalents
Kunkka1 changeTalents
Legion Commander3 changesTalents
Leshrac2 changes
Diabolic Edict
Talents
Lich3 changes
Frost Shield

Chain Frost
Talents
Lifestealer3 changesTalents
Lina1 change
Lion2 changesTalents
Lone Druid4 changes
Summon Spirit Bear
Talents
Luna1 changeTalents
Lycan5 changes
Summon Wolves

Howl
Medusa5 changesTalents
Meepo1 change
Mirana1 change
Sacred Arrow
Monkey King2 changes
Wukong's Command
Morphling2 changesTalents
Naga Siren4 changes
Mirror Image
Talents
Nature's Prophet2 changesTalents
Necrophos2 changes
Death Pulse
Talents
Night Stalker4 changes
Hunter in the Night

Dark Ascension
Talents
Nyx Assassin4 changesTalents
Ogre Magi2 changes
Fireblast

Multicast
Omniknight4 changes
Outworld Devourer2 changes
Sanity's Eclipse
Talents
Pangolier2 changesTalents
Phantom Assassin3 changes
Phantom Lancer2 changesTalents
Phoenix1 change
Pudge1 change
Queen of Pain2 changes
Scream Of Pain

Shadow Strike
Razor2 changesTalents
Riki3 changesTalents
Rubick2 changes
Telekinesis
Talents
Sand King2 changes
Burrowstrike

Sand Storm
Shadow Demon2 changes
Soul Catcher

Shadow Poison
Shadow Fiend1 change
Presence of the Dark Lord
Shadow Shaman1 changeTalents
Silencer2 changes
Last Word
Talents
Skywrath Mage1 change
Mystic Flare
Slardar1 changeTalents
Slark1 change
Pounce
Sniper2 changes
Headshot
Talents
Spectre3 changes
Spectral Dagger
Talents
Storm Spirit2 changes
Electric Vortex
Talents
Sven4 changes
Warcry

Storm Hammer
Techies1 change
Templar Assassin4 changes
Meld
Talents
Terrorblade1 change
Tidehunter1 change
Anchor Smash
Timbersaw5 changes
Reactive Armor

Whirling Death
Talents
Tiny4 changes
Avalanche
Talents
Treant Protector4 changes
Living Armor

Overgrowth
Talents
Troll Warlord2 changesTalents
Tusk3 changes
Tag Team
Underlord1 change
Undying2 changesTalents
Ursa2 changes
Fury Swipes
Vengeful Spirit1 changeTalents
Venomancer1 change
Viper2 changes
Nethertoxin
Visage3 changesTalents
Warlock3 changes
Chaotic Offering
Weaver2 changesTalents
Windranger2 changesTalents
Winter Wyvern2 changes
Cold Embrace
Witch Doctor2 changes
Maledict
Talents
Wraith King1 change
Zeus1 changeSource: official Dota 2 patch notes (dota2.com).