User blog comment:YourPrivateNightmare/Unnecessary custom Graves changes 2.0/@comment-11842624-20141118235352

-Buckshot cooldown will be reduced by 1 second upon killing a unit
 * = "don't fight with Graves if more then 3 creeps in his range"

you previous idea "-Basic attacks against champions will now reduce the CD of buckshot by 1 second. " was better

-Cooldown will be reset upon scoring a kill or assist
 * no way. half reduction is maximum