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Version History[]

Version
Description
  • Increased Agility attribute symbol.png agility gain from 2.5 to 2.7.
  • Increased Poison Attack magic resistance reduction per stack from 3%/5%/7%/9% to 4%/6%/8%/10%.
Level 15 right talent changed: +100 attack range ➜ +70 Nethertoxin max damage per second.
  • Increased turn rate from 0.5 to 0.6.
  • Rescaled Poison Attack mana cost from 25 on each level to 20/22/24/26.
  • Reduced Viper Strike mana cost from 125/175/225 to 100/150/200.
  • Aghanim's Shard icon.png Aghanim's Shard upgrade:
    • Poison Attack
      • Now also allows Poison Attack to be cast on and affect buildings, dealing 40% of the damage.
      • Reduced armor reduction per stack from 1.5 to 1.
  • Talents:
Level 15 left talent changed: +5 Corrosive Skin attack speed slow/damage per second/magic resistance ➜ +300 health.
Level 25 left talent changed: Poison Attack affects buildings ➜ 2x Corrosive Skin attack speed slow/magic resistance.
Level 25 right talent changed: Nethertoxin silences ➜ -11s Nethertoxin cooldown.
Level 25 right talent changed: Nethertoxin silences ➜ -11s Nethertoxin cooldown.
  • Increased Nethertoxin max damage per second from 60/80/100/120 to 80/100/120/140.
  • Talents:
Level 10 left talent: 10% spell lifesteal reduced to 8%.
Level 10 right talent: +25 attack speed reduced to +20.
Level 15 left talent: +6 Corrosive Skin attack speed slow/damage per second/magic resistance reduced to +5.
Level 15 right talent: +125 attack range reduced to +100.
Level 20 left talent: +90 attack damage reduced to +70.
Level 20 right talent: +100 Viper Strike damage per second reduced to +80.
  • Increased Viper Strike damage per second from 60/100/145 to 80/120/160.
  • Talents:
Level 10 left talent: 8% spell lifesteal increased to 10%.
Old Poison Attack
Causes Viper's attacks to slows attack and movement speed while dealing damage over time based on the amount of health the target is missing.
Cast range: 600
Damage per missing health: 0.5/0.75/1/1.25
Movement speed slow: 10%/20%/30%/40%
Attack speed slow: 10/20/30/40
Duration: 3
Mana cost: 40/35/30/25
Cooldown: 6/4/2/0
Notes: Active attack modifier. Uses the cast range on manual cast, but the default attack range on autocast.
New Poison Attack
Causes Viper's attacks to apply a stacking movement speed slow and magic resistance deduction while dealing damage over time.
Cast range: 600/640/680/720
Damage per second per stack: 4/8/12/16
Movement speed slow per stack: 6%/8%/10%/12%
Magic resistance reduction per stack: 3%/5%/7%/9%
Max stacks: 5
Duration: 4
Mana cost: 20
Cooldown: 0
Notes: Active attack modifier. Uses the increases range on manual cast and on autocast.
Old Nethertoxin
Releases a Nethertoxin at the targeted area. Units in that area take damage over time and their passives do not work.
Cast range: 900
Radius: 380
Damage per second: 30/45/60/75
Magic resistance reduction: 10%/15%/20%/25%
Duration: 8
Mana cost: 70/80/90/100
Cooldown: 6
Notes: The projectile travels at a speed of 2000. Damage, magic resistance reduction, and break are provided by an aura that lingers for 0.5 seconds. Multiple instances do not stack. Deals damage in 1-second intervals.
New Nethertoxin
Releases a Nethertoxin at the targeted area. Units in that area take an increasing damage over time based on how long they remain in it, have lower resistance and their passives do not work.
Cast range: 900
Radius: 400
Minimum damage per second: 15/20/25/30
Maximum damage per second: 60/80/100/120
Max damage duration: 4
Duration: 8
Mana Cost: 70/80/90/100
Cooldown: 14
Notes: The projectile travels at a speed of 2000. Damage and break are provided by an aura that lingers for 0.5 seconds. Multiple instances do not stack. Deals damage in 0.5-second intervals.
  • Talents:
Level 20 left talent changed: Poison Attack affects buildings ➜ +90 attack damage.
Level 25 left talent changed: +160 attack damage Poison Attack affects buildings.
  • Talents:
Level 25 left talent: +120 attack damage increased to +160.
  • Increased base damage from 23-25 to 25-27.
  • Talents:
Level 10 right talent: +20 attack speed increased to +25.
Level 15 right talent: +100 attack range increased to +125.
  • Increased Poison Attack damage per missing health point from 0.25/0.5/0.75/1 to 0.5/0.75/1/1.25.
  • Reduced Agility attribute symbol.png agility gain from 3.3 to 2.8.
  • Poison Attack
    • Reduced movement speed slow from 25%/30%/35%/40% to 10%/20%/30%/40%.
    • Reduced attack speed slow from 25/30/35/40 to 10/20/30/40.
  • Nethertoxin
    • The damage per second of multiple overlapping instances no longer stacks. [?]
    • Increased mana cost from 75 on each level to 70/80/90/100.
  • Increased Agility attribute symbol.png agility gain from 2.9 to 3.3.
  • Nethertoxin
    • Increased radius from 350 to 380.
    • Increased damage per second from 20/35/50/65 to 30/45/60/75.
  • Reduced base health regeneration from 1.5 to 0.
  • Reduced base mana regeneration from 0.9 to 0.
  • Nethertoxin
    • Increased radius from 300 to 350.
    • Increased damage per second from 20/30/40/50 to 20/35/50/65.
  • Reduced movement speed from 285 to 275.
  • Reduced base armor from -1 to -2 (total armor is now 1.5).
  • Increased turn rate from 0.4 to 0.5.
  • Increased base health regeneration from 0 to 1.5.
  • Increased base mana regeneration from 0.01 to 0.9.
  • Poison Attack
    • Now deals 0.25/0.5/0.75/1 damage per missing health to the target, instead of a fixed 10/16/22/28.
    • Increased movement speed slow from 10%/20%/30%/40% to 25%/30%/35%/40%.
    • Increased attack speed slow from 10/20/30/40 to 25/30/35/40.
    • Increased debuff duration from 2 to 3.
    • Increased cooldown from 0 on each level to 6/4/2/0.
    • Increased mana cost from 20 on each level to 40/35/30/25.
  • Reworked Nethertoxin
Old Nethertoxin
Nethertoxin causes Viper's normal attack to deal bonus damage to units based on how much health they are missing. The bonus damage doubles for each 20% of health missing from the target. Nethertoxin deals half damage to creeps and buildings.
Base hero attack damage Bonus: 3/6/9/12
Base non-hero Attack damage Bonus: 1.5/3/4.5/6
Maximum hero attack damage bonus: 48/96/144/192
Maximum non-hero attack damage bonus: 24/48/72/96
New Nethertoxin
Viper releases a Nethertoxin at the targeted area. Units in that area take damage over time, have lower resistance and their passives do not work.
Cast range: 900
Radius: 300
Damage per second: 20/30/40/50
Magic resistance reduction: 10%/15%/20%/25%
Duration: 8
Mana cost: 75
Cooldown: 5
Notes: Applies Break within the area. The Break is provided by an aura, which lingers for 0.5 seconds. The damage is independent from the aura, and stacks with multiple instances. The projectile travels at a speed of 2000.
  • Corrosive Skin
    • No longer slows movement speed by 10%/15%/20%/25%.
    • Rescaled attack speed slow from 10/15/20/25 to 8/16/24/32.
    • Increased damage per second from 10/15/20/25 to 8/16/24/32.
  • Reworked talents:
Old:
Level 10: +175 health or +15 attack damage
Level 15: +16 Agility attribute symbol.png agility or +15 Strength attribute symbol.png strength
Level 20: +75 attack range or Poison Attack affects buildings
Level 25: +80 Viper Strike damage per second or +20 armor
New:
Level 10: 8% spell lifesteal or +20 attack speed
Level 15: +6 Corrosive Skin attack speed slow/damage per second/magic resistance or +100 attack range
Level 20: Poison Attack affects buildings or +100 Viper Strike damage per second
Level 25: +120 attack damage or Nethertoxin silences
  • Talents:
Level 15 right talent: +10 Strength attribute symbol.png strength increased to +15.
  • Increased Strength attribute symbol.png strength gain from 2.1 to 2.4.
  • Reduced base health regeneration from 0.25 to 0.
  • Viper Strike
    • Now deals its first tick of damage immediately, instead of 1 second after the debuff is placed. [?]
    • Reduced cooldown from 70/50/30 to 60/45/30.
  • Talents:
Level 10 left talent: +150 health increased to +175.
Level 15 left talent: +14 Agility attribute symbol.png agility increased to +16.
Level 15 right talent: +8 Strength attribute symbol.png strength increased to +10.
Level 20 right talent changed: +7 armor Poison Attack affects buildings.
Level 25 right talent changed: Poison Attack affects buildings ➜ +20 armor.
  • Talents:
Level 15 right talent: +7 Strength attribute symbol.png strength increased to +8.
  • Talents:
Level 10 left talent: +125 health increased to +150.
  • Increased Nethertoxin damage from 2.5/5/7.5/10 to 3/6/9/12 (max damage bonus from 40/80/120/160 to 48/96/144/192).
  • Added talents:
Level 10: +125 health or +15 attack damage
Level 15: +14 Agility attribute symbol.png agility or +7 Strength attribute symbol.png strength
Level 20: +75 attack range or +7 armor
Level 25: +80 Viper Strike damage per second or Poison Attack affects buildings
  • Corrosive Skin
    • Now only procs on enemies within 1400 radius.
    • No longer procs on damage from other Corrosive Skins.
  • Corrosive Skin
    • Increased movement speed slow and magic resistance bonus from 5%/10%/15%/20% to 10%/15%/20%/25%.
    • Increased attack speed slow and damage per second from 5/10/15/20 to 10/15/20/25.
  • Reduced movement speed from 290 to 285.
  • Reduced movement speed from 300 to 290.
Old Frenzy
Increases attack speed for 20 seconds, at the cost of taking additional damage.
Attack speed bonus: 25/50/75/100
Incoming damage amplification: 5%/10%/15%/20%
Duration: 20
Mana cost: 80/90/110/130
Cooldown: 40
New Nethertoxin
Adds a powerful toxin to Viper's attacks. Deals more damage the lower the target's health is. Half damage against non-hero units.
Attack damage bonus per missing 20% hp: 2/4/6/8
Base hero attack damage Bonus: 2/4/6/8
Base non-hero Attack damage Bonus: 1/2/3/4
Maximum hero attack damage bonus: 16/32/48/64
Maximum non-hero attack damage bonus: 32/64/96/128
Notes: Passive ability. Viper's attacks will deal 2/4/6/8 extra damage. This extra damage gets doubled for each 20% health the target is missing. Deals half as much damage against non-hero units. Affects buildings as well.
100%-81% health: 2/4/6/8 damage
80%-61% health: 4/8/12/16 damage
60%-41% health: 8/16/24/32 damage
40%-21% health: 16/32/48/64 damage
20%-1% health: 32/64/96/128 damage
  • Reduced Viper Strike cooldown from 80 on each level to 80/50/30.
  • Reduced base attack damage from 28-30 to 23-25 (total attack damage is now 44-46).
  • Increased base attack damage from 16-18 to 28-30 (total attack damage is now 49-51).
Old Trueshot Aura
An aura that gives friendly nearby units bonus damage to their ranged attacks.
Radius: 300
Ranged attack damage bonus: 7%/14%/21%/28%
New Corrosive Skin
Viper's Body is covered with poison. Any unit that attacks it gets infected. Reduces movement and attack speed and deals minor damage over time.
Damage per second: 5/10/15/20
Movement speed slow: 5%/10%/15%/20%
Attack speed slow: 5/10/15/20
Duration: 2
Notes: Any unit which attacks the Viper gets poisoned. The effect does not stack, successive attacks only refresh the duration.
  • Improved attack animation from 0.300/0.700 to 0.330/1.000.
  • Improved cast animation from 0.500/0.830 to 0.300/0.510.
  • Reduced base regeneration from 0.50 to 0.25.
  • Changed back movement type from horse to hover. [?]
  • Changed movement type from hover to horse. [?]
  • Reduced base Strength attribute symbol.png strength from 18 to 17.
  • Reduced Intelligence attribute symbol.png intelligence gain from 2.00 to 1.8.
  • Reduced base attack damage from 16-22 to 15-18.
  • Increased base attack time from 1.5 to 1.7.
  • Reduced night vision from 1700 to 800.
  • Reduced Frenzy mana cost from 110/125/140/155 to 80/90/110/130.
  • Increased Poison Arrows damage per second from 4/8/12/16 to 6/12/18/24.
  • Viper Strike
    • Increased damage per second from 50/85/130 to 60/100/145.
    • Reduced cooldown from 100/80/50 to 80 on each level.
  • Reduced Poison Arrows mana cost from 14 to 10.
  • Viper Strike
    • Increased cast range from 470 to 500.
    • Reduced damage per second from 55/90/150 to 50/85/130.
  • Reduced Frenzy incoming damage amplification from 10%/20%/30%/35% to 5%/10%/15%/20%.
  • Reduced Trueshot Aura radius from 900 to 300.
  • Increased Viper Strike cast range from 300 to 470.
  • Increased Frenzy mana cost from 100/115/130/145 to 110/125/140/155.
  • Frenzy
    • Reduced bonus attack speed 30/60/90/120 to 25/50/75/100.
    • Reduced incoming damage amplification from 10%/20%/30%/35% to 10%/15%/25%/30%.
    • Increased mana cost from 90/105/120/130 to 100/115/130/145.
  • Reduced Trueshot Aura bonus ranged damage from 9%/18%/27%/36% to 7%/14%/21%/28%.
  • Increased base health from 100 to 150.
  • Frenzy
    • Reduced bonus attack speed 50/80/120/160 to 30/60/90/120.
    • Increased incoming damage amplification from 10%/15%/20%/25% to 10%/20%/30%/35%.
    • Increased cooldown from 10 to 40.
  • Increased Poison Arrows mana cost from 13 to 14.
  • Removed Aghanim's Scepter icon.png Aghanim's Scepter upgrade for Viper minimap icon.png Viper.
    • No longer increases Viper Strike damage per second from 40/70/110 to 55/90/150.
Old Dark Prison
Traps the subject in a magical prison.
Stun duration: 3/4.5/6
Cast range: 600
Mana cost: 150
Cooldown: 35
New Viper Strike
Strike with a vicious bite, slowing movement and attack speeds significantly and dealing poison damage over time.
Cast range: 300
Projectile speed: 1200
Damage per second: 40/70/110
Attack/Movement speed slow: 40%/60%/80%
Duration: 5.1
Mana cost: 125/175/250
Cooldown: 100/80/50
  • Reduced Frenzy mana cost from 100/115/130/145 to 90/105/120/130.
  • Reduced Poison Arrows mana cost from 16 to 13.
  • Increased Frenzy mana cost from 100 on each level to 100/115/130/145.
  • Poison Arrows
    • No longer grants bonus damage.
    • Increased mana cost from 8 to 16.
    • Reduced duration from 3 to 2.
    • Reduced damage per second from 5/10/15/20 to 4/8/12/16.
  • Added a 4th level to all basic abilities.
  • Frenzy
    • Rescaled bonus incoming damage from 10%/20%/25% to 10%/15%/20%/25%.
    • Rescaled bonus attack speed from 50/100/150 to 50/80/120/160.
    • Rescaled duration from 15/30/45 to 20.
    • Increased mana cost from 60 to 100.
    • Reduced cooldown from 60 to 10.
  • Replaced Dark Prison with Poison Arrows.
Old Dark Prison
Traps the subject in a magical prison.
Cast Range: 700
Hero stun duration: 2/3/4
Non-Hero stun duration: 9/18/24
Cooldown: 30
Mana cost: 110
New Poison Arrows
Coats Viper's arrows with poison. Adds bonus damage, applies a debuff that reduces movement speed, attack speed and applies a dps.
Bonus damage: 10/20/30/40
Cast range: 600
Movement speed slow: 10%/20%/30%/40%
Attack speed slow: 10/20/30/40
Damage per second: 5/10/15/20
Duration: 3
Mana cost: 8
Old Haste
Increases this units movement and attack speed.
Attack speed bonus: 10/20/30
Movement speed bonus: 30%/60%/90%
Duration: 20
Mana cost: 60
Cooldown: 50
New Dark Prison
Traps the subject in a magical prison.
Stun duration: 3/4.5/6
Cast range: 600
Mana cost: 150
Cooldown: 35
  • Dark Prison
    • Reduced duration from 4/6/8 to 2/3/4.
    • Reduced cooldown from 75 to 30.
    • Increased mana cost from 90 to 110.
  • Reduced Dark Prison cooldown from 15 to 75.
  • Frenzy
    • Reduced bonus attack speed from 75/150/225 to 50/100/150.
    • Increased cooldown from 35 to 60.
  • Reworked Frenzy
    • No longer drains 4/7/10 health per second.
    • Viper is no longer able to cast Frenzy on allied units, only self.
    • Now increases incoming damage. Damage amplification 10%/20%/25%.
    • Rescaled duration from 20/30/40 to 15/30/45.
    • Increased mana cost from 50 to 60.
    • Increased cooldown from 14 to 35.
  • Increased Frenzy cooldown from 1 to 14.
Old Healing Wave
Calls forth a wave of energy that heals a target and bounces to nearby friendlies. Each bounce heals for less damage.
Cast range: 700
Bounce radius: 500
Number of bounces: 3/4/5
Base heal: 130/215/300
Bounce heal heduction: 25%
Mana cost: 90
Cooldown: 9
New Dark Prison
Traps the subject in a magical prison.
Cast range: 700
Hero stun duration: 4/6/8
Non-Hero stun duration 9/18/24
Mana cost: 90
Cooldown: 15
  • Moved Haste to the fourth ability slot. This is now Viper minimap icon.png Viper's ultimate ability.
    • Increased bonus movement speed from 15%/30%/45% to 30%/60%/90%.
    • Increased bonus attack speed from 10%/20%/30% to 20%/40%/60%.
    • Reduced duration from 60 to 20 seconds.
    • Increased mana cost from 30 to 60 seconds.
    • Increased cooldown from 30 to 50 seconds.
  • Frenzy can now be cast on allied units.
  • Created. [?]

Patch History[]

Patch
Description
  • Fixed Nethertoxin's damage sound being located on the caster, instead of the affected enemy.
    • Reduced the damage sound's soundlevel from 78 to 75.
    • Reduced sound limiter amount from 7 to 5 max instances.
  • Fixed Poison Attack passively granting increased attack range against buildings.
  • Minor updates and optimization to hero animations.
  • Minimap icon has been updated to his remodeled version.
  • Split up back item slot into back and tail slots in loadout. [?]
  • Fixed Nethertoxin projectile dummy units pointing to the personal folder of Brandon.
  • Added tooltip modifier for Nethertoxin: Passive abilities disabled, and Magic Resistance reduced by <value>.
  • Added attack speed activity modifiers and movement speed activity modifiers for Viper minimap icon.png Viper.
    • These modifiers are used to trigger different animations at different speeds.
  • Viper minimap icon.png Viper is disabled for new restricted accounts.
  • Reworked default hero model.
  • Update 8
    • Updated minimap icon.
  • Fixed rare case where Corrosive Skin would stop damaging/slowing enemies when they got debuffed by illusions first.
  • Updated Corrosive Skin ability tooltip to state that it is applied to an enemy when an attack hits.
  • Updated various hero related sound effects.
  • Fixed having 1 more armor than intended.
  • Fixed Corrosive Skin to happen at the start of the attack animation rather than at the end of it.
  • Fixed Corrosive Skin to happen at the start of the attack animation rather than at the end of it.
  • Fixed Corrosive Skin having a bug that caused it to not work properly.
  • Fixed Viper Strike slow doing maximum power for the entire duration instead of falling off.
  • Removed from new heroes list.
    • Viper minimap icon.png Viper will not be the only ones chosen with Random Hero.
  • Nethertoxin
    • Fixed a bug where debuff wouldn't do any damage to the creeps that it had poisoned.
    • Fixed ability working on allied units for denies.
  • Fixed Corrosive Skin working on buildings.
  • Fixed Viper Strike not slowing spell immune units.
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