Animation Module, Scion of the Swarm, Krark-Clan Ironworks, and Dross Harvester

Prerequisites

• Animation Module on the battlefield
• Scion of the Swarm on the battlefield
• Krark-Clan Ironworks on the battlefield
• Dross Harvester on the battlefield
• You control at least one artifact creature

Steps

1. Activate Krark-Clan Ironworks by sacrificing an artifact creature, adding
2. When the creature dies, Dross Harverster's second ability triggers, causing you to gain 2 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. Repeat

Results

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