Ayula, Queen Among Bears + Maskwood Nexus + Animation Module + Phyrexian Altar

Ayula, Queen Among Bears

Maskwood Nexus

Animation Module

Phyrexian Altar

How it works

1. Cause a creature to enter the battlefield.
2. Ayula triggers, putting two +1/+1 counters on any creature you control.
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 Ayula.
5. Holding priority, activate Phyrexian Altar by sacrificing the Servo, adding one mana of any color.
6. Resolve the Ayula trigger, putting two +1/+1 counters on any creature you control.
7. Repeat from step 3.