Audacious Reshapers, Mortuary, Intruder Alarm, and Etched Familiar

Prerequisites

• Audacious Reshapers on the battlefield
• Mortuary on the battlefield
• Intruder Alarm on the battlefield
• Etched Familiar on the battlefield
• Audacious Reshapers does not have summoning sickness

Steps

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

Results

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