Sentry Ward

Cost: 100 Gold.
Cooldown: 1 Second.
On Use: Plants a Sentry Ward, an invisible water that grants True Sight, the ability to see invisible enemy units and wards, to any existing allied vision within an 850 radius. Lasts 4 minutes, does not grant ground vision. Hold control to give one Sentry Ward to an allied hero.
Range: 500.
Flavor Text: A form of plant originally grown in the garden of a fearful king.