Audacious Reshapers, Intruder Alarm, Mortuary, and Tocasia's Onulet

Prerequisites

• Audacious Reshapers on the battlefield
• Intruder Alarm on the battlefield
• Mortuary on the battlefield
• Tocasia's Onulet on the battlefield
• Audacious Reshapers does not have summoning sickness

Steps

1. Activate Audacious Reshapers by tapping it and sacrificing Tocasia's Onulet
2. When Tocasia's Onulet dies, it and Mortuary trigger
3. Resolve the Tocasia's Onulet trigger, causing you to gain 2 life
4. Resolve the Mortuary trigger, putting Tocasia's Onulet on top of your library from your graveyard
5. Resolve the Audacious Reshapers ability, revealing Tocasia's Onulet from the top of your library, then putting it onto the battlefield and dealing 1 damage to you
6. When Tocasia's Onulet enters the battlefield, Intruder Alarm triggers, untapping all creatures
7. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite untap of all creatures