Mortuary + Rograkh, Son of Rohgahh + Yahenni, Undying Partisan + Gwenom, Remorseless

Mortuary

Rograkh, Son of Rohgahh

Yahenni, Undying Partisan

Gwenom, Remorseless

How it works

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

This clever loop turns zero-mana casting costs into an engine of endless triggers by anchoring itself to the battlefield with Yahenni, Undying Partisan. You begin by using Yahenni's sacrifice ability to feed it Rograkh, Son of Rohgahh, which triggers Mortuary to seamlessly recycle Rograkh right back onto the top of your library instead of letting it rest in the graveyard. Meanwhile, Gwenom, Remorseless grants you the vital permission to play cards directly from the top of your library, allowing you to recast a free 0-mana Rograkh over and over again while dodging mana costs entirely.