Animation Module, Scion of the Swarm, Krark-Clan Ironworks, and Soul Warden

Prerequisites

• Animation Module on the battlefield
• Scion of the Swarm on the battlefield
• Krark-Clan Ironworks on the battlefield
• Soul Warden on the battlefield
• You have a way to cause a creature to enter the battlefield under your control
• available

Steps

1. Cause a creature to enter the battlefield under your control
2. Soul Warden triggers, causing you to gain 1 life
3. Scion of the Swarm triggers, putting a +1/+1 counter on itself
4. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
5. When the Servo enters the battlefield, Soul Warden triggers
6. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding
7. Resolve the Soul Warden trigger, causing you to gain 1 life
8. Repeat from step 3

Results

• Infinite +1/+1 counters on Scion of the Swarm
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers