Kalastria Highborn + Mortuary + Phyrexian Altar + Gwenom, Remorseless

Kalastria Highborn

Mortuary

Phyrexian Altar

Gwenom, Remorseless

How it works

1. Activate Phyrexian Altar by sacrificing Kalastria Highborn, adding .
2. When Kalastria Highborn dies, it and Mortuary trigger.
3. Resolve the Kalastria Highborn trigger, causing you to pay to have an opponent lose 2 life and you to gain 2 life.
4. Resolve the Mortuary trigger, putting Kalastria Highborn from your graveyard onto the top of your library.
5. Cast Kalastria Highborn from the top of your library by paying 2 life.
6. Repeat.

This loop is a masterclass in recycling, turning the Phyrexian Altar into an engine that continuously feeds your graveyard and library. By sacrificing Kalastria Highborn to the Altar, you generate the black mana needed to pay for her own triggered ability while triggering Mortuary to seamlessly place her back on top of your library. From there, Gwenom, Remorseless steps in as the enabler, allowing you to bypass mana costs entirely and recast Kalastria Highborn from the top of your library by paying her life cost instead, effectively closing the loop into an endless drain of life for your opponents.