Heidar, Rimewind Master, Dockside Extortionist, and Intruder Alarm

Prerequisites

• Heidar, Rimewind Master on the battlefield
• Dockside Extortionist in hand
• Intruder Alarm on the battlefield
• You control at least four snow permanents
• Opponents control at least five artifacts and/or enchantments
• Heidar does not have summoning sickness
• available

Steps

1. Cast Dockside Extortionist by paying
2. Dockside Extortionist enters the battlefield, triggering itself and Intruder Alarm
3. Resolve the Dockside Extortionist trigger, creating at least five Treasure tokens
4. Resolve the Intruder Alarm trigger, untapping all creatures
5. Activate four Treasure tokens by tapping and sacrificing them, adding
6. Activate Heidar by paying and tapping it, returning Dockside Extortionist from the battlefield to your hand
7. Repeat

Results

• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite Treasure tokens
• Infinite untap of creatures you control