Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating a 1/1 Saproling creature token.
Activate Ashnod's Altar by sacrificing the Saproling, adding {C}{C}.
The Saproling dies, triggering Pitiless Plunderer, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding {G}.
Activate Void Attendant by paying {1}{G} and putting a card from an opponent's exile into their graveyard, creating a 1/1 Eldrazi Scion creature token.
Activate Ashnod's Altar by sacrificing the Eldrazi Scion, adding {C}{C}.
The Eldrazi Scion dies, triggering Pitiless Plunderer, creating a Treasure token.
Repeat.

Infinite colored mana

Infinite colorless mana

Infinite creature tokens

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Infinite Treasure tokens

Necrogenesis

Void Attendant

Ashnod's Altar

Pitiless Plunderer

Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating a 1/1 Saproling creature token.
Activate Phyrexian Altar by sacrificing the Saproling, adding {1}.
The Saproling dies, triggering Pitiless Plunderer, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding {G}.
Activate Void Attendant by paying {1}{G} and putting a card from an opponent's exile into their graveyard, creating a 1/1 Eldrazi Scion creature token.
Activate Phyrexian Altar by sacrificing the Eldrazi Scion, adding {1}.
The Eldrazi Scion dies, triggering Pitiless Plunderer, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding {1}.
Repeat.

Phyrexian Altar

Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating a 1/1 Saproling creature token.
Activate Krark-Clan Ironworks by sacrificing the Saproling, adding {2}.
Activate Void Attendant by paying {2} and putting a card from an opponent's exile into their graveyard, creating a 1/1 Eldrazi Scion creature token.
Activate Krark-Clan Ironworks by sacrificing the Eldrazi Scion, adding {2}.
Repeat.

Krark-Clan Ironworks

Mycosynth Lattice

Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating a 1/1 Saproling creature token.
Activate Ashnod's Altar by sacrificing the Saproling, adding {2}.
Activate Void Attendant by paying {2} and putting a card from an opponent's exile into their graveyard, creating a 1/1 Eldrazi Scion creature token.
Activate Ashnod's Altar by sacrificing the Eldrazi Scion, adding {2}.
Repeat.

Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating a 1/1 Saproling and a 1/1 Squirrel creature token.
Activate Phyrexian Altar twice by sacrificing the Saproling and Squirrel, adding {1}{G}.
Activate Void Attendant by paying {1}{G} and putting a card from an opponent's exile into their graveyard, creating a 1/1 Eldrazi Scion and a 1/1 Squirrel creature token.
Activate Phyrexian Altar twice by sacrificing the Eldrazi Scion and Squirrel, adding {2}.
Repeat.

Chatterfang, Squirrel General

Activate Necrogenesis by paying {2}, exling a creature card from an opponent's graveyard and creating two 1/1 Saproling creature tokens.
Activate Phyrexian Altar twice by sacrificing the Saprolings, adding {1}{G}.
Activate Void Attendant by paying {1}{G} and putting a card from an opponent's exile into their graveyard, creating two 1/1 Eldrazi Scion creature tokens.
Activate Phyrexian Altar twice by sacrificing the Eldrazi Scions, adding {2}.
Repeat.

Combos with "Necrogenesis"