Peregrin Took, Cauldron Familiar, Pitiless Plunderer, and Ashnod's Altar

Prerequisites

• Peregrin Took on the battlefield
• Cauldron Familiar on the battlefield
• Pitiless Plunderer on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Cauldron Familiar, adding
2. When Cauldron Familiar dies, Pitiless Plunderer triggers, creating a Treasure and a Food artifact token
3. Activate Cauldron Familiar by sacrificing the Food, returning Cauldron Familiar to the battlefield from your graveyard
4. When Cauldron Familiar enters the battlefield, it triggers, causing each opponent to lose 1 life and you to gain one life
5. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers
• Infinite Treasure tokens