Whisper, Blood Liturgist, Necrotic Ooze, Black Carriage, and Underworld Hermit

Prerequisites

• Whisper, Blood Liturgist in the graveyard
• Necrotic Ooze on the battlefield
• Black Carriage in the graveyard
• Underworld Hermit in the graveyard
• Necrotic Ooze does not have summoning sickness
• You control at least two additional creatures
• It is your upkeep

Steps

1. During your upkeep, activate Necrotic Ooze using Whisper's ability by tapping it and sacrificing two other creatures, returning Underworld Hermit from your graveyard to the battlefield
2. When Underworld Hermit enters the battlefield, it triggers, creating at least four 1/1 Squirrel creature tokens
3. Activate Necrotic Ooze using Black Carriage's ability by sacrificing Underworld Hermit, untapping Necrotic Ooze
4. Repeat

Results

• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Return all creature cards from your graveyard to the battlefield