Self-Sufficient Servos

When Self-Sufficient Servos enters the
battlefield, you may pay {1}. If you do, create
a 1/1 colorless Servo artifact creature token.
Tap two untapped Servos you control: Create
a 1/1 colorless Servo artifact creature token.
Activate only once each turn.
{3}, {t}: Create a 1/1 colorless Servo artifact
creature token.