Sorcerer's Broom, Ashnod's Altar, and Doubling Season

Prerequisites

• Sorcerer's Broom on the battlefield
• Ashnod's Altar on the battlefield
• Doubling Season on the battlefield
• You control at least one additional creature
• available

Steps

1. Activate Ashnod's Altar by sacrificing another creature, adding
2. Sorcerer's Broom triggers, causing you to pay to create two token copies of Sorcerer's Broom
3. Activate Ashnod's Altar twice by sacrificing the Sorcerer's Broom tokens, adding
4. Sorcerer's Broom triggers twice, and each Sorcerer's Broom token triggers once
5. Resolve the first three triggers, choosing not to pay
6. Resolve the final trigger, causing you to pay to create two token copies of Sorcerer's Broom
7. Repeat from step 3

Results

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