Golgari Thug, Phyrexian Altar, Bolas's Citadel, and Dross Harvester

Prerequisites

• Golgari Thug on the battlefield
• Phyrexian Altar on the battlefield
• Bolas's Citadel on the battlefield
• Dross Harvester on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Golgari Thug
2. When Golgari Thug dies, it and Dross Harvester trigger
3. Resolve the Golgari Thug trigger, putting it from your graveyard onto the top of your library
4. Resolve the Dross Harvester trigger, causing you to gain 2 life
5. Cast Golgari Thug from the top of your library by paying 2 life
6. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count