Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.)
When this artifact enters,
conjure (A conjured card is added to the game.) a card named
Hangarback Walker onto the battlefield, then put a +1/+1 counter on it.
Max speed — At the beginning of your end step, put a +1/+1 counter on each artifact creature and/or Vehicle you control.