Spawning Pit, Doubling Season, and Ashnod's Altar

Prerequisites

• Spawning Pit on the battlefield
• Doubling Season on the battlefield
• Ashnod's Altar on the battlefield
• At least 2 charge counters on Spawning Pit
• available

Steps

1. Pay , removing 2 charge counters from Spawning Pit to create two 2/2 Spawn creature tokens
2. Sacrifice one token to Ashnod's Altar to add
3. Sacrifice the other token to Spawning Pit to put 2 charge counters on Spawning Pit
4. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers