Mortuary + Zulaport Cutthroat + Myr Scrapling + Gwenom, Remorseless

Mortuary

Zulaport Cutthroat

Myr Scrapling

Gwenom, Remorseless

How it works

1. Activate Myr Scrapling by sacrificing it.
2. When Myr Scrapling dies, Mortuary and Zulaport Cutthroat trigger.
3. Resolve the Mortuary trigger, putting Myr Scrapling from your graveyard onto the top of your library.
4. Resolve the Zulaport Cutthroat trigger, causing you to gain 1 life and each opponent to lose 1 life.
5. Resolve the Myr Scrapling ability.
6. Cast Myr Scrapling from the top of your library by paying 1 life.
7. Repeat.

This loop turns a humble Myr Scrapling into an engine of endless attrition, fueled entirely by the quiet inevitability of Mortuary. Whenever you sacrifice Myr Scrapling to pump another creature with its +1/+1 counter ability, Mortuary instantly intercepts it on the way to the graveyard and places it right back on top of your library. From there, Gwenom, Remorseless lets you peer past the veil and recast the automaton straight off the library, bypassing its mana cost by paying a mere single point of life instead. Meanwhile, Zulaport Cutthroat stands watch over the cycle, converting every single repetition into an inescapable drain on your opponents' life totals that easily outpaces the meager life you spend to recast.