From Liquipedia Dota 2 Wiki
Makes you invisible until the duration ends, or until you attack or cast a spell. While Shadow Walk is active, you move faster and can pass through units. If attacking to break the invisibility, you apply bonus damage on that attack and break the target, disabling its passive abilities. Attacking to end invisibility cannot miss.
Causes melee attacks to strike twice in quick succession. These attacks apply a brief slow.
- Only works on melee wielders.
- The slow is applied on both attacks.
- The slow only works on real heroes.