Feldon of the Third Path, Dockside Extortionist, and Intruder Alarm

Prerequisites

• Feldon of the Third Path on the battlefield
• Dockside Extortionist in the graveyard
• Intruder Alarm on the battlefield
• Feldon does not have summoning sickness
• Opponents control at least four artifacts and/or enchantments
• available

Steps

1. Activate Feldon by paying and tapping it, creating a token copy of Dockside Extortionist with haste that is an artifact in addition to its other types
2. When Dockside Extortionist enters the battlefield, it and Intruder Alarm trigger
3. Resolve the Intruder Alarm trigger, untapping all creatures
4. Resolve the Dockside Extortionist trigger, creating at least four Treasure tokens
5. Activate three Treasures by tapping and sacrificing them, adding
6. Repeat

Results

• Infinite colored mana
• Infinite creature tokens with haste
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite Treasure tokens
• Infinite untap of all creatures