Kenrith, the Returned King, Su-Chi, and Phyrexian Altar

Prerequisites

• Kenrith, the Returned King on the battlefield
• Su-Chi on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Su-Chi, adding
2. When Su-Chi dies, it triggers, adding
3. Activate Kenrith's fifth ability by paying , returning Su-Chi from your graveyard to the battlefield
4. Repeat

Results

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