Emptiness + Phyrexian Altar + Cadaver Imp

Emptiness

Phyrexian Altar

Cadaver Imp

How it works

1. Cast Emptiness for its evoke cost by paying .
2. When Emptiness enters, its first ability and evoke ability trigger.
3. Holding priority, activate Phyrexian Altar by sacrificing Emptiness, adding .
4. Resolve Emptiness's evoke trigger, failing to sacrifice it as it's no longer on the battlefield.
5. Resolve Emptiness's first trigger, returning Cadaver Imp from your graveyard to the battlefield.
6. When Cadaver Imp enters, it triggers, returning Emptiness from your graveyard to your hand.
7. Activate Phyrexian Altar by sacrificing Cadaver Imp, adding .
8. Repeat.

This elegant loop revolves around casting **Emptiness** for its flexible evoke cost, immediately sacrificing it to **Phyrexian Altar** before its sacrifice trigger can resolve so that it instead hits the graveyard and triggers its resurrection ability. That ability uses the mana value condition met by its white mana investment to pull **Cadaver Imp** straight from the graveyard to the battlefield, where the Imp's own entry trigger loops **Emptiness** right back to your hand. Meanwhile, **Phyrexian Altar** converts each sacrificed creature back into the colored mana needed to recast the whole chain endlessly.