Mortuary + Blasting Station + Memnite + Gwenom, Remorseless

Mortuary

Blasting Station

Memnite

Gwenom, Remorseless

How it works

1. Activate Blasting Station by tapping it and sacrificing Memnite
2. When Memnite dies, Mortuary triggers, putting Memnite from your graveyard onto the top of your library.
3. Resolve the Blasting Station ability.
4. Cast Memnite from the top of your library by paying 0 life.
5. When Memnite enters, Blasting Station triggers, untapping Blasting Station.
6. Repeat.

This clever loop centers around a self-sustaining recycling machine powered by Blasting Station and Mortuary. You sacrifice Memnite to Blasting Station to deal a point of damage, which immediately triggers Mortuary to place Memnite right back on top of your library. From there, Gwenom, Remorseless grants you the ability to cast creatures directly from the top of your library while bypassing their mana costs with its life-payment clause. Because Memnite costs zero mana, you can recast it for free, triggering Blasting Station's untap ability so the entire sequence can start all over again.