Mortuary + Bile Urchin + Syr Vondam, Sunstar Exemplar + Gwenom, Remorseless

Mortuary

Bile Urchin

Syr Vondam, Sunstar Exemplar

Gwenom, Remorseless

How it works

1. Activate Bile Urchin by sacrificing it.
2. When Bile Urchin dies, Mortuary and Syr Vondam trigger.
3. Resolve the Mortuary trigger, putting Bile Urchin from your graveyard onto the top of your library.
4. Resolve the Syr Vondam trigger, causing you to gain 1 life and putting a +1/+1 counter on Syr Vondam.
5. Resolve the Bile Urchin ability.
6. Cast Bile Urchin from the top of your library by paying 1 life.
7. Repeat.

This loop is a masterclass in recycling your own resources, centered around the life-draining sacrifice of Bile Urchin. Every time you pop the Urchin, Mortuary steps in to instantly place it right back on top of your library, setting up your next draw. Meanwhile, Syr Vondam, Sunstar Exemplar happily accumulates endless +1/+1 counters and gains you life off every single death trigger, completely offsetting the life you pay. The real engine that makes this all repeatable is Gwenom, Remorseless, whose attack trigger lets you cast the Urchin straight off the top of your library for a mere 1 life instead of its mana cost, fueling an endless loop of sacrifice and rebirth.