Koll, the Forgemaster, Sword of the Meek, Memnite, and Krark-Clan Ironworks

Prerequisites

• Koll, the Forgemaster on the battlefield
• Sword of the Meek in the graveyard
• Memnite in hand
• Krark-Clan Ironworks on the battlefield

Steps

1. Cast Memnite by paying
2. Memnite enters the battlefield, triggering Sword of the Meek, returning Sword of the Meek from your graveyard to the battlefield attached to Memnite
3. Activate Krark-Clan Ironworks by sacrificing Memnite, adding
4. Memnite dies, triggering Koll, returning Memnite from your graveyard to your hand
5. Activate Krark-Clan Ironworks by sacrificing Sword of the Meek, adding
6. Repeat

Results

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