Bloodseeker is invigorated by the wounds of his enemies, restoring some life when he kills a unit. Restores for half values when denying, or if an ally kills a nearby enemy hero. Also gains bonus movement speed when an enemy hero's health falls below 80%, with the bonuses increasing as their health falls further. If an enemy hero's health falls below 25%, he will also gain vision and True Sight of that hero. Bonuses stack per hero. Unlocks max movement speed for Bloodseeker.