Witch-Maw Nephilim, Animation Module, Pitiless Plunderer, Sprout Swarm, and Ashnod's Altar

Prerequisites

• Witch-Maw Nephilim on the battlefield
• Animation Module on the battlefield
• Pitiless Plunderer on the battlefield
• Sprout Swarm in hand
• Ashnod's Altar on the battlefield
• at most available

Steps

1. Cast Sprout Swarm with buyback by paying at most
2. Witch-Maw Nephilim's first ability triggers, putting two +1/+1 counters on it
3. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
4. Activate Ashnod's Altar by sacrificing the Servo, adding
5. When the Servo dies, Pitiless Plunderer triggers, creating a Treasure artifact token
6. Activate the Treasure by tapping and sacrificing it, adding
7. Resolve Sprout Swarm, creating a 1/1 Saproling creature token and returning Sprout Swarm to your hand
8. Cast Sprout Swarm by paying and tapping the Saproling token
9. Witch-Maw Nephilim's first ability triggers; holding priority, activate Ashnod's Altar by sacrificing the Saproling, adding
10. When the Saproling dies, Pitiless Plunderer triggers, creating a Treasure artifact token
11. Resolve the Witch-Maw Nephilim trigger, putting two +1/+1 counters on it
12. Repeat from step 3
13. Once you have infinite mana, you may forego sacrificing the Servos and/or the Saprolings

Results

• Infinite +1/+1 counters on Witch-Maw Nephilim
• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count
• Infinite Treasure tokens