Hero NETHERDRAKE Hero Animated
Advanced statistics
Affiliation: Scourge
Attack Animation: 0.33 / 1
Damage: 44 - 46
Casting Animation: 0.3 / 0.51
Armor: 1.94
Base Attack Time: 1.7
Movespeed: 285
Projectile Speed: 1200
Attack Range: 575
Sight Range: 1800 / 800
Poison Attack
Coats Viper's attack with poison. Slows movement and attack speeds and lasts 2 seconds.
Notes • Damage type: magical• Poison attack is an orb effect buff placer.• The slow and damage will not be increased by successive casts; the duration of the spell will be refreshed instead.
Nethertoxin
Adds a powerful toxin to your attacks. Deals more damage the lower the target's health is. Half damage on non-hero units and buildings.
Notes • Starts off with 2.5/5/7 .5/10 bonus damage, and doubles for each 20% missing hp of target unit.
Corrosive Skin
Viper's body is covered with poison, granting increased resistance to spells. Also, any unit that damages Viper will become infected, taking minor damage and having its movement speed and attack speed reduced for 4 seconds.
Notes • Damage type: magic• Spell resistance stacks with spell resistance from items.

Viper Strike
Strikes with a vicious bite, slowing movement and attack speed significantly and dealing poison damage over time.
Notes • Damage type: magical.• Slow works on magic immune units.• Can be improved by Aghanim's Scepter (* shows the improved values).• Units afflicted by Viper Strike can be denied by their allies when their HP drops below 25% of their maximum health.
Hero Introduction
Viper specializes in pinning down single targets from a distance, while dealing moderate damage. His Poison Attack allows him to consistently slow someone down, and he can fire a heavily concentrated Viper Strike toxin to nearly stop someone in their tracks, and deal good damage over time. This allows him to be more aggressive as he can go in and keep targets from escaping. To aid with leading a charge, he's developed Corrosive Skin that offers resistances, returns minor poison and slows the attacker. While most of Viper's damage is dealt over time with poisons, he has a passive Nethertoxin which allows him to deal additional damage to weaker units.
Background story
A malicious Drake tamed by the Lich King himself, Viper is a fierce, acid-spitting beast whose speed and agility surprises the most hardened of warriors. Cursing himself into a maddened rage, Viper charges into battle without regard of his own safety. His salivary glands produce stinging poison that causes enemies to writhe in pain, severely damaging their nerves. Be careful when facing this powerful monster...its dark silhouette may be the last thing you will ever see.