Kenrith, the Returned King, Phyrexian Altar, and Hornet Queen

Prerequisites

• Kenrith, the Returned King on the battlefield
• Phyrexian Altar on the battlefield
• Hornet Queen in the graveyard
• available

Steps

1. Activate Kenrith's fifth ability by paying , returning Hornet Queen to the battlefield from your graveyard
2. When Hornet Queen enters the battlefield, it triggers, creating four 1/1 Insect creature tokens
3. Activate Phyrexian Altar five times by sacrificing Hornet Queen and the four Insect tokens, adding
4. Repeat

Results

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