Steel Overseer + Animation Module + Thornbite Staff + Phyrexian Altar

Steel Overseer

Animation Module

Thornbite Staff

Phyrexian Altar

How it works

1. Activate Steel Overseer by tapping it, putting a +1/+1 counter on each artifact creature you control.
2. Animation Module triggers for each artifact creature you control.
3. Resolve the first Animation Module trigger, creating a 1/1 Servo artifact creature token.
4. Activate Phyrexian Altar by sacrificing the Servo, adding 1.
5. The Servo dies, triggering Thornbite Staff, untapping Steel Overseer.
6. Repeat from step 3 for each remaining Animation Module trigger.
7. Repeat from step 1.