Mortuary + Phyrexian Altar + Aetherflux Reservoir + Gwenom, Remorseless

Mortuary

Phyrexian Altar

Aetherflux Reservoir

Gwenom, Remorseless

How it works

1. Activate Phyrexian Altar by sacrificing a creature
2. When the creature dies, Mortuary triggers, putting the creature from your graveyard onto the top of your library.
3. Cast the creature from the top of your library by paying X life, where X is the creature's mana value.
4. Aetherflux Reservoir triggers, causing you to gain 1 life for each spell you've cast this turn.
5. Repeat.

This fascinating loop is masterfully anchored by Gwenom, Remorseless, whose static ability lets you cast creatures directly from the top of your library while neatly bypassing their mana costs with life payments instead. With Mortuary ensuring any sacrificed creature instantly returns to the top of your library rather than lingering in the graveyard, you can feed that same creature endlessly into Phyrexian Altar to generate infinite colored mana and sacrifice triggers. As you repeatedly cast and sacrifice your creature, Aetherflux Reservoir tracks the skyrocketing storm count, compounding your life total with massive gains until you can finally cash out with its 50-life activation to obliterate any target.