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

Prerequisites

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

Steps

1. Activate Ashnod's Altar by sacrificing Golgari Thug, adding
2. Golgari Thug dies, triggering itself and Dross Harvester
3. Resolve the Golgari Thug trigger, putting itself on top of your library from your graveyard
4. Resolve the Dross Harvester trigger, causing you to gain two life
5. Cast Golgari Thug from the top of your library by paying 2 life
6. Repeat

Results

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