Audacious Reshapers + Mortuary + Intruder Alarm + Boulderbranch Golem

Audacious Reshapers

Mortuary

Intruder Alarm

Boulderbranch Golem

How it works

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.

This clever loop relies on the precise manipulation of your library and graveyard to generate infinite resources. By tapping Audacious Reshapers to sacrifice Boulderbranch Golem, you trigger Mortuary to immediately place the Golem right back on top of your library where the Reshapers' search ability is guaranteed to find it again instantly. Meanwhile, Intruder Alarm watches the endless procession of entering creatures to untap your board with every single iteration. Finally, the Golem's own entrance ability offsets the self-inflicted damage from the Reshapers by netting you infinite life along the way.