This has been removed from Heroes of the Storm. 
Tier 1 (Hero Level 1)
Cooldown: 45 seconds
Places a Scouting Drone at target location, granting vision and revealing a large area around it for 45 seconds. This drone cannot be hidden and is killed by enemies with 2 Basic Attacks. Stores up to 2 charges.
Patch changes[]
(Patch July 10, 2018) Note: Removed from Raynor.
(Patch January 9, 2018) Note: Removed from Malfurion.- (Patch September 5, 2017) Note: Removed from Lt. Morales.
- (Patch January 24, 2017) Note: Will now properly reveal Creep Tumors and Toxic Nests.
- (Patch November 15, 2016) Note: Now also reveals Stealthed/Cloaked Heroes.
- (Patch March 29, 2016) Note: Removed from Tychus.
- (Patch July 21, 2015) Note: Removed from Brightwing.