You control at least one additional nontoken creature.
You have at least one creature card in your graveyard.
Whisper does not have summoning sickness.
Steps
Activate Whisper by tapping it, sacrificing Village Bell-Ringer and any other creature you control, targeting any other creature card in your graveyard.
Ashnod the Uncaring triggers, copying Whisper's ability, targeting Village Bell-Ringer.
Resolve the copy of Whisper's ability, returning Village Bell-Ringer from your graveyard to the battlefield.
When Village Bell-Ringer enters the battlefield, it triggers, untapping all creatures you control.
Resolve the original Whisper ability, returning the targeted creature from your graveyard to the battlefield.
Repeat.
Results
Infinite death triggers.
Infinite ETB.
Infinite graveyard recursion.
Infinite LTB.
Infinite sacrifice triggers.
Infinite untap of creatures you control except Whisper.