Animation Module + Intruder Alarm + Juniper Order Ranger
Animation Module
Intruder Alarm
Juniper Order Ranger
Infinite creature tokensInfinite creature ETBInfinite mana creatures you control can produceInfinite untap of creaturesInfinite +1/+1 counters on a creature
How it works
Cause a creature to enter the battlefield.
Intruder Alarm and Juniper Order Ranger trigger.
Resolve the Intruder Alarm trigger, untapping all creatures.
Holding priority, activate a mana-producing creature by tapping it, adding at least 1.
Resolve the Juniper Order Ranger trigger, putting a +1/+1 counter on it and the creature that entered the battlefield.
Animation Module triggers twice.
Resolve the first trigger, choosing not to pay.
Resolve the Animation Module trigger, causing you to pay 1 to create a 1/1 Servo artifact creature token.