Luminous Broodmoth + Phyrexian Altar + Cult Conscript

Luminous Broodmoth

Phyrexian Altar

Cult Conscript

How it works

1. Activate Phyrexian Altar by sacrificing Cult Conscript, adding .
2. When Cult Conscript dies, Luminous Broodmoth triggers, returning Cult Conscript from your graveyard to the battlefield with a flying counter on it.
3. Activate Phyrexian Altar by sacrificing Cult Conscript, adding 1.
4. Activate Cult Conscript by paying 1, returning it from your graveyard to the battlefield.
5. Repeat.

This loop is a masterclass in turning a card's apparent limitation into an infinite engine, relying on the fact that Luminous Broodmoth only cares about creatures *without* flying dying. Since Cult Conscript lacks flying, its initial death triggers the Broodmoth to return it to the battlefield with a flying counter. Once that newly monsooned Skeleton is sacrificed to Phyrexian Altar for mana, it can no longer rely on the Broodmoth—which is precisely where Cult Conscript's own recursion ability steps in. By using the mana generated by the Altar alongside the death condition it just satisfied, you can repeatedly pull the Conscript straight out of the graveyard, resetting its lack of flying so the Broodmoth can catch it all over again.