Whisper, Blood Liturgist, Volrath's Shapeshifter, Thousand-Year Elixir, and Xathrid Necromancer

Prerequisites

• Whisper, Blood Liturgist on the battlefield
• Volrath's Shapeshifter in the graveyard
• Thousand-Year Elixir on the battlefield
• Xathrid Necromancer on the battlefield
• An additional creature on the battlefield

Steps

1. Activate Whisper, Blood Liturgist, sacrificing itself and an additional creature to return Volrath's Shapeshifter from the graveyard to the battlefield
2. Xathrid Necromancer triggers, creating a zombie token
3. Volrath's Shapeshifter enters the battlefield as a copy of Whisper, Blood Liturgist
4. Activate Volrath's Shapeshifter, sacrificing itself and a zombie token to return Whisper, Blood Liturgist to the battlefield
5. Xathrid Necromancer triggers, creating a zombie token

Results

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