Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Luminous Broodmoth enters the battlefield triggering Corpse Knight, causing each opponent to lose 1 life.
Repeat.

Infinite death triggers

Infinite creature ETB

Infinite lifeloss

Infinite creature LTB

Infinite creature sacrifice triggers

Luminous Broodmoth

Corpse Knight

Downdraft

Phyrexian Altar

Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Falkenrath Noble triggers, causing a player to lose 1 life and causing you to gain 1 life.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Repeat.

Infinite lifegain

Infinite lifegain triggers

Falkenrath Noble

Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Bastion of Remembrance triggers, causing each opponent to lose 1 life and causing you to gain 1 life.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Repeat.

Bastion of Remembrance

Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Zulaport Cutthroat triggers, causing each opponent to lose 1 life and causing you to gain 1 life.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Repeat.

Zulaport Cutthroat

Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Cruel Celebrant triggers, causing each opponent to lose 1 life and causing you to gain 1 life.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Repeat.

Cruel Celebrant

Activate Downdraft by paying {G}, causing Luminous Broodmoth to lose flying until end of turn.
Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding {G}.
Dross Harvester triggers, causing you to gain two life.
Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it.
Repeat.

Combos with "Downdraft"