Clement, the Worrywort, Intruder Alarm, and Ambrosia Whiteheart

Prerequisites

• Clement, the Worrywort on the battlefield
• Intruder Alarm on the battlefield
• Ambrosia Whiteheart in hand

Steps

1. Activate any number of creatures you control by tapping them, adding at least
2. Cast Ambrosia by paying
3. When Ambrosia enters the battlefield, it, Clement and Intruder Alarm trigger
4. Resolve the Intruder Alarm trigger, untapping all creatures
5. Holding priority, activate any number of creatures you control by tapping them, adding at least
6. Resolve the Clement trigger, returning nothing to your hand
7. Resolve the Ambrosia trigger, returning Clement from the battlefield to your hand
8. Cast Clement by paying
9. When Clement enters the battlefield, it and Intruder Alarm trigger
10. Resolve the Clement trigger, returning Ambrosia from the battlefield to your hand
11. Resolve the Intruder Alarm trigger, untapping all creatures
12. Repeat

Results

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