Ashcloud Phoenix, Skirk Alarmist, Intruder Alarm, and Goblin Bombardment

Prerequisites

• Ashcloud Phoenix on the battlefield
• Skirk Alarmist on the battlefield
• Intruder Alarm on the battlefield
• Goblin Bombardment on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing Ashcloud Phoenix
2. Ashcloud Phoenix triggers, returning itself from your graveyard to the battlefield face down
3. Ashcloud Phoenix enters the battlefield, triggering Intruder Alarm, untapping all creatures
4. Resolve the Goblin Bombardment ability, dealing 1 damage to any target
5. Activate Skirk Alarmist by tapping it, turning Ashcloud Phoenix face up
6. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of all creatures