Pulmonic Sliver, Metallic Sliver, Ashnod's Altar, and Garruk's Horde

Prerequisites

• Pulmonic Sliver on the battlefield
• Metallic Sliver on the battlefield
• Ashnod's Altar on the battlefield
• Garruk's Horde on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Metallic Sliver, adding
2. Metallic Sliver is put on top of your library instead of your graveyard due to its ability granted by Pulmonic Sliver
3. Cast Metallic Sliver from the top of your library by paying
4. Repeat

Results

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