Viper
Historical Balance Tracker & Intelligence
Balance History
6/22/2026
No hero-specific updates in this patch.
5/6/2026
Nosedive: Cooldown increased from 20s to 25s
4/7/2026
No hero-specific updates in this patch.
3/27/2026
No hero-specific updates in this patch.
3/24/2026
Agility gain increased from 2.7 to 2.9
Base Attack Speed decreased from 120 to 110
Predator: Base Damage per Missing Health Percentage increased from 0.15 to 0.25
Corrosive Skin: Aghanim's Scepter now also gradually increases Corrosive Skin's magic resistance and damage per second while he is in Nethertoxin, up to 50% increased effect after 4s
Talents: Level 10 Talent +10% Poison Attack slow/damage replaced with +15 Corrosive Skin Damage Per Second
Talents: Level 15 Talent +20 Corrosive Skin Damage Per Second replaced with +15% Poison Attack Slow / Damage
Talents: Level 15 Talent +30 Nethertoxin Min/Max Damage replaced with +20/40 Nethertoxin Min/Max Damage
Talents: Level 20 Talent Predator Damage Per Missing Health increased from +0.3 to +0.35
Patch 7.40cNet Gain
1/22/2026Corrosive Skin: Damage per second rescaled from 8/16/24/32 to 10/15/20/25
Talents: Level 20 Talent Predator Damage Per Missing Health increased from +0.25 to +0.3
Talents: Level 20 Talent Viper Strike DPS decreased from +80 to +70
12/23/2025
Talents: Level 10 Talent +20 Corrosive Skin Damage Per Second replaced with +10% Poison Attack Slow/Damage
Talents: Level 15 Talent +15% Poison Attack Slow/Damage replaced with +20 Corrosive Skin Damage Per Second
Talents: Level 15 Talent Nethertoxin Min/Max Damage decreased from +40 to +30
12/16/2025
Poison Attack: Mana Cost decreased from 22 to 20
Talents: Level 20 Talent Predator Damage Per Missing Health increased from +0.2 to +0.25
10/2/2025
Corrosive Skin: Attack Slow increased from 8/16/24/32 to 9/18/27/36
6/12/2026
Nethertoxin: Min DPS increased from 15/20/25/30 to 15/25/35/45
6/24/2025
No hero-specific updates in this patch.
5/29/2025
No hero-specific updates in this patch.
6/12/2026
Poison Attack: Mana Cost decreased from 24 to 22
Viper Strike: Attack Slow increased from 80/120/160 to 100/140/180
3/27/2025
No hero-specific updates in this patch.
3/4/2025
No hero-specific updates in this patch.
2/19/2025
Nosedive: Now also releases Nethertoxin upon landing
Talents: Level 10 Talent +4% Poison Attack Magic Resistance Reduction replaced with +1s Viper Strike Duration
Talents: Level 25 Talent Become Universal replaced with Nethertoxin Radius increases by 25 every 0.5s
11/20/2024
No hero-specific updates in this patch.
10/3/2024
No hero-specific updates in this patch.
8/28/2024
No hero-specific updates in this patch.
8/14/2024
Predator: Bonus damage is now decreased by the illusion damage reduction amount if applied by illusions
Predator: Damage per missing health decreased from 0.25 + 0.05 per Viper's level to 0.15 + 0.05 per Viper's level
Talents: Level 15 Talent +20 Corrosive Skin Attack Speed Slow replaced with +15% Poison Attack slow/damage
Talents: Level 20 Talent +20% Poison Attack slow/damage replaced with +0.2 Predator Damage per missing health
Patch 7.37Net Gain
7/31/2024Predator: New Innate ability. Passive, can't be leveled up
Predator: Viper's attacks deal an additional instance of physical damage per missing health percentage of his target, equal to 0.25 + 0.05 per Viper's level. Only works on heroes
Corrosive Skin: No longer an innate ability
Corrosive Skin: Attack Slow rescaled from 3/6/14/22/30 to 8/16/24/32
Corrosive Skin: Magic Resistance rescaled from 5/10/15/20/25% to 10/15/20/25%
Corrosive Skin: Damage per second rescaled from 3/6/14/22/30 to 8/16/24/32
Patch 7.36cNet Gain
6/25/2024No hero-specific updates in this patch.
Patch 7.36bNet Gain
6/6/2024Poison Attack: Max Stacks increased from 5 to 6
Nethertoxin: Projectile Speed increased from 2000 to 2400
5/27/2024
No hero-specific updates in this patch.
5/23/2024
Poison Attack: Cast Range decreased from 600/640/680/720 to 600
Nosedive: No longer Disarms
Nosedive: Corrosive Skin Splatter Radius decreased from 1200 to 500
Nosedive: Cast Range increased from 475 to 700
Nosedive: Dive Speed increased from 500 to 700
Talents: Level 10 Talent Corrosive Skin Damage Per Second increased from +18 to +20
Talents: Level 15 Talent +15% Corrosive Skin Magic Resistance replaced with +20 Corrosive Skin Attack Speed Slow
3/21/2024
No hero-specific updates in this patch.
2/22/2024
Nethertoxin: Max DPS decreased from 50/75/100/125 to 35/65/95/125
Corrosive Skin: Max Range Radius decreased from 1400 to 1200
12/21/2023
Poison Attack: Aghanim's Shard Max Stacks decreased from 8 to 7
Talents: Level 10 Talent Poison Attack Magic Resistance Reduction decreased from +5% to +4%
Talents: Level 20 Talent Poison Attack slow/damage decreased from +25% to +20%
6/12/2026
Nethertoxin: No longer applies Break
Nethertoxin: Now slows attack speed by 30/40/50/60
Viper Strike: Now also applies Break
Viper Strike: Movement Slow increased from 40/60/80% to 60/70/80%
Viper Strike: Cast Point improved from 0.3s to 0.2s
11/21/2023
No hero-specific updates in this patch.
10/5/2023
No hero-specific updates in this patch.
9/9/2023
No hero-specific updates in this patch.
8/15/2023
No hero-specific updates in this patch.
8/8/2023
Viper Strike: Duration increased from 5s to 6s
Viper Strike: Initial Attack Slow increased from 40/60/80 to 80/120/160
Viper Strike: Damage per second decreased from 80/120/160 to 70/110/150
Viper Strike: Projectile Speed increased from 1200 to 1500
Nosedive: Cast Range increased from 375 to 475
Talents: Level 25 Talent -11s Nethertoxin Cooldown replaced with Become Universal
7/13/2023
No hero-specific updates in this patch.
6/16/2023
No hero-specific updates in this patch.
5/14/2023
No hero-specific updates in this patch.
4/26/2023
No hero-specific updates in this patch.
6/13/2026
Viper Strike: Cast Range increased from 500 to 700/800/900