Celebrity Fencer + Animation Module + Phyrexian Altar

Celebrity Fencer

Animation Module

Phyrexian Altar

How it works

1. Cause a creature to enter the battlefield.
2. Celebrity Fencer triggers, putting a +1/+1 counter on itself.
3. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
4. The Servo enters the battlefield, triggering Celebrity Fencer.
5. Holding priority, activate Phyrexian Altar by sacrificing the Servo, adding 1.
6. Resolve the Celebrity Fencer trigger, putting a +1/+1 counter on it.
7. Repeat from step 3.