Ashnod the Uncaring, Whisper, Blood Liturgist, and Little Bear

Prerequisites

• Ashnod the Uncaring on the battlefield
• Whisper, Blood Liturgist on the battlefield
• Little Bear on the battlefield

Steps

1. Activate Whisper by tapping it, sacrificing Little Bear and any other creature you control, targeting any other creature card in your graveyard
2. Ashnod the Uncaring triggers, copying Whisper's ability, targeting Little Bear
3. Resolve the copy of Whisper's ability, returning Little Bear from your graveyard to the battlefield
4. When Little Bear 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 ETB
• Infinite LTB
• Infinite death triggers
• Infinite recursion of creature cards in your graveyard
• Infinite sacrifice triggers