Void Attendant, Planar Void, Phyrexian Altar, and Biomancer's Familiar

Prerequisites

• Void Attendant on the battlefield
• Planar Void on the battlefield
• Phyrexian Altar on the battlefield
• Biomancer's Familiar on the battlefield
• An opponent has a card in exile
• available

Steps

1. Activate Void Attendant by paying and putting a card an opponent owns from exile into their graveyard
2. Planar Void triggers, exiling the card put into the graveyard
3. Resolve the Void Attendant ability, creating a 1/1 Eldrazi Scion creature token
4. Activate Phyrexian Altar by sacrificing the Eldrazi Scion, adding
5. Repeat

Results

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