Intruder Alarm, and Kiki-Jiki, Mirror Breaker

Prerequisites

• Intruder Alarm on the battlefield
• Kiki-Jiki, Mirror Breaker on the battlefield
• You control at least one nonlegendary creature

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of any nonlegendary creature you control
2. When the the creature token enters the battlefield, Intruder Alarm triggers, untapping all creatures
3. Repeat

Results

• Infinite copies of all nonlegendary creatures you control
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of all creatures