Mortuary + Cauldron Familiar + Woe Strider + Gwenom, Remorseless

Mortuary

Cauldron Familiar

Woe Strider

Gwenom, Remorseless

How it works

1. Cast Cauldron Familiar either from your hand or from the top of your library by paying or 1 life respectively.
2. When Cauldron Familiar enters, it triggers, causing each opponent to lose 1 life and you to gain 1 life.
3. Activate Woe Strider by sacrificing Cauldron Familiar.
4. When Cauldron Familiar dies, Mortuary triggers, putting Cauldron Familiar from your graveyard onto the top of your library.
5. Resolve the Woe Strider ability.
6. Repeat.

This clever loop turns Woe Strider into a zero-cost sacrifice outlet that continuously recycles Cauldron Familiar thanks to Mortuary, which instantly places the cat back onto your library whenever it dies. While the loop itself drains your opponents out with repeated enter-the-battlefield triggers, Gwenom, Remorseless is the key that breaks the game wide open: its attack trigger lets you cast cards straight from the top of your library by paying life instead of mana, turning Mortuary's top-deck placement into a seamless engine.