Urza, Prince of Kroog, Magic Pot, Ashnod's Altar, and Doubling Season

Prerequisites

• Urza, Prince of Kroog on the battlefield
• Magic Pot on the battlefield
• Ashnod's Altar on the battlefield
• Doubling Season on the battlefield
• available

Steps

1. Activate Urza by paying , creating two token copies of Magic Pot that are 1/1 Soldiers
2. Activate Ashnod's Altar twice by sacrificing the Magic Pot tokens, adding
3. When the Magic Pot tokens die, they trigger, creating four Treasure tokens
4. Activate two Treasures by tapping and sacrificing them, adding
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens
• Infinite Treasure tokens
• Infinite creature copies of artifacts you control