Mortuary + Memnite + Carrion Feeder + Gwenom, Remorseless

Mortuary

Memnite

Carrion Feeder

Gwenom, Remorseless

How it works

1. Activate Carrion Feeder by sacrificing Memnite
2. When Memnite dies, Mortuary triggers, putting Memnite from your graveyard onto the top of your library.
3. Resolve the Carrion Feeder ability.
4. Cast Memnite from the top of your library by paying 0 life.
5. Repeat.

This loop is all about recycling a zero-mana artifact creature to endlessly fuel your engine. By sacrificing Memnite to Carrion Feeder, you grow the Feeder while immediately triggering Mortuary, which places Memnite right back onto the top of your library. From there, Gwenom, Remorseless steps in with her attack trigger, allowing you to cast Memnite straight from the top of your library without ever dipping into your hand—paying zero life instead of its mana cost because of its lack of a mana value. Repeat this seamless cycle to pump Carrion Feeder to infinitely large proportions while generating an endless stream of sacrifice, death, and enter-the-battlefield triggers.