Items / Silver Edge
Silver Edge costs 5,700 gold in Dota 2 patch 7.41f.
Makes you invisible for 17 seconds, or until you attack or cast a spell. While invisible, you move 25% faster and can move through units. Attacking to end the invisibility will deal 300 bonus physical damage, disable their passive abilities for 5 seconds, and cap their movement speed to 200.
Once used to slay an unjust king, only to have the kingdom erupt into civil war in the aftermath.