Having the runed axe as a core item allows magebane to do what i call "Wave Pushing" Where Mage bane blinks ahead of the creep wave and wipes out the incoming enemy creeps before allied creeps arrive, and then repeating. what this does is stops him from being in a lane for too long where the enemy team will notice and come to stop him from farming as this method of farming is completed in around 30 seconds. Following that up by taking a neutral camp or two and than porting to the opposite lane. then rinse and repeat. until your late game items have been farmed, ganking enemy heroes and defending towers when necessary, don't leave your team hanging.