Drow's experiences in battle grant her a chance to launch arrows with incredible accuracy and effectiveness. Pierces through the enemy's defenses, ignoring their armor entirely. Instantly kills creeps and deals bonus physical damage to heroes on proc. This ability is disabled if there is an enemy hero within
400 range.
Enemy Hero Search Radius:
400
Proc Chance:
20% /
30% /
40%
Proc Hero Damage:
120
Causes Drow Ranger's attacks to splinter on the target, hitting nearby units with normal attacks that deal reduced damage.
Hero Build Guides for DotA 2
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the double bonus thingy is what makes it overpowered, just remove it 40 bonus agility is enough...