Necrogenesis, Void Attendant, Phyrexian Altar, and Doubling Season

Prerequisites

• Necrogenesis on the battlefield
• Void Attendant on the battlefield
• Phyrexian Altar on the battlefield
• Doubling Season on the battlefield
• An opponent has a creature card in their graveyard
• available

Steps

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

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers