Gray Mann

When Gray Mann enters the battlefield, create a
1/1 colorless Servo artifact creature token for
each artifact you control.
At the beginning of your upkeep, create a
colorless artifact token named Australium Bar
with "{2}, {t}, sacrifice this artifact: you gain 2 life
and draw a card."
Servos you control get +1/+0 for each other
Servo you control.