Audacious Reshapers, Mortuary, Intruder Alarm, and Boulderbranch Golem

Prerequisites

• Audacious Reshapers on the battlefield
• Mortuary on the battlefield
• Intruder Alarm on the battlefield
• Boulderbranch Golem on the battlefield
• Audacious Reshapers does not have summoning sickness
• Your life total is at least 2

Steps

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

Results

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