Requires

Animation Module must be on the battlefield. Mana Echoes must be on the battlefield. Arwen, Weaver of Hope must be on the battlefield. You have a way to put a +1/+1 counter on a creature you control. Mana needed:

Steps

1. Put a +1/+1 counter on any creature you control.
2. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token.
3. When the Servo enters the battlefield with at least one +1/+1 counter on it due to Arwen, Mana Echoes and Animation Module trigger.
4. Resolve the Mana Echoes trigger, adding for each Servo you control.
5. Resolve the Animation Module trigger, causing you to pay to create a 1/1 Servo artifact creature token.
6. Repeat from step 3.

Results