This has been removed from Heroes of the Storm. 
Tier 1 (Hero Level 1)
Basic Attacks against Structures destroy 1 ammo and deal an additional 10% damage.
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(Patch September 27, 2016) Note: Removed.- (Patch July 12, 2016) Note: Removed from Zagara.
- (Patch March 29, 2016) Note: Removed from Gazlowe.
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