Audacious Reshapers + Mortuary + Intruder Alarm + Anodet Lurker

Audacious Reshapers

Mortuary

Intruder Alarm

Anodet Lurker

How it works

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

This clever loop relies on Audacious Reshapers to repeatedly sacrifice Anodet Lurker, which is instantly returned to the top of your library thanks to Mortuary's steady enchantment trigger. Because Anodet Lurker's death also gains you 3 life, it easily offsets the single point of damage dealt by Audacious Reshapers' search ability. Finally, Intruder Alarm watches the resulting creature enter the battlefield and untaps your board, allowing you to tap Audacious Reshapers over and over again to sustain the infinite sequence.