Ashnod the Uncaring, Whisper, Blood Liturgist, and Sparring Mummy

Prerequisites

• Ashnod the Uncaring on the battlefield
• Whisper, Blood Liturgist on the battlefield
• Sparring Mummy on the battlefield

Steps

1. Activate Whisper by tapping it, sacrificing Sparring Mummy and any other creature you control, targeting any other creature card in your graveyard
2. Ashnod the Uncaring triggers, copying Whisper's ability, targeting Sparring Mummy
3. Resolve the copy of Whisper's ability, returning Sparring Mummy from your graveyard to the battlefield
4. When Sparring Mummy enters the battlefield, it triggers, untapping Whisper
5. Resolve the original Whisper ability, returning the targeted creature from your graveyard to the battlefield
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite recursion of creature cards in your graveyard