Archangel of Thune, Animation Module, Ajani's Welcome, and Ashnod's Altar

Prerequisites

• Archangel of Thune on the battlefield
• Animation Module on the battlefield
• Ajani's Welcome on the battlefield
• Ashnod's Altar on the battlefield
• You have a way to cause a creature to enter the battlefield under your control

Steps

1. Cause a creature to enter the battlefield under your control
2. Ajani's Welcome triggers, causing you to gain 1 life
3. Archangel of Thune triggers, putting a +1/+1 counter on each creature you control
4. Animation Module triggers for each counter placed this way
5. Resolve all but one Animation Module trigger, choosing not to pay
6. Resolve the last Animation Module trigger, causing you to pay to create a 1/1 Servo artifact creature token
7. The Servo enters the battlefield, triggering Ajani's Welcome
8. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding
9. Resolve the Ajani's Welcome trigger, causing you to gain 1 life
10. Repeat from step 3

Results

• Infinite +1/+1 counters
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers