Tier 5 (Hero Level 13)
While in Siege Mode, hitting Heroes with Basic Attacks reduces the cooldown of Thrusters by 5 seconds.
Patch changes 
Edit
(Patch December 12, 2017) Note: The Hyper-Cooling Engines talent will no longer grant cooldown reduction from basic attacks against non-Heroic targets while in Siege Mode.
- (Patch November 29, 2017) Note: Moved from Level 7; New functionality: Each enemy Hero hit with a Basic Attack in Siege Mode reduces the cooldown of Thrusters by 5 seconds.
- (Patch August 24, 2016) Note: Cooldown reduction increased from 10 to 15 seconds; No longer makes Thrusters always active while in the Hall of Storms.
