Sheen and GP
Sheen
is an item which has two requirements to be used. First, that an ability be activated, which in turn places sheen's passive on the champion. Second, it requires an auto attack to use the passive. This is a two fold system which requires an two events in a specified order. However, with GP
he can get sheen, and then fire his gun which is an ability, but sheen procts with the gun, instead of going to the champion to be used on an auto attack. How is it that an item, which requires a two step process, be used in 1 single step with an ability that has little to no cooldown on a melee champion.