Dockside Extortionist, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Dockside Extortionist on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Opponents control at least two artifacts and/or enchantments
• available

Steps

1. Activate Ashnod's Altar by sacrificing Dockside Extortionist, adding
2. Dockside Extortionist dies, triggering Nim Deathmantle, causing you to pay to return Dockside Extortionist from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Dockside Extortionist enters the battlefield, creating at least two Treasure tokens
4. Activate two Treasure tokens by tapping and sacrificing them, adding two mana of any color
5. Repeat

Results

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