Denying

Denying is the act of last hitting a friendly unit. Enemies gain no gold and reduced experience from any denied unit. Enemies gain 50% experience for denied lane creeps and 0% experience for denied player-controlled units. All allied units can be denied once they fall below a certain percentage of health: creeps, and non-hero units at 50%, heroes at 25%, and towers at 10%. However, heroes can only be denied under special circumstances. Illusions and couriers cannot be denied. To deny a unit, issue an on the unit.