Whisper, Blood Liturgist, Necrotic Ooze, Black Carriage, and Marionette Master

Prerequisites

• Whisper, Blood Liturgist in the graveyard
• Necrotic Ooze on the battlefield
• Black Carriage in the graveyard
• Marionette Master in the graveyard
• Necrotic Ooze does not have summoning sickness
• You control at least two additional creatures

Steps

1. During your upkeep, activate Necrotic Ooze using Whisper's ability by tapping it and sacrificing two other creatures, returning Marionette Master from your graveyard to the battlefield
2. Marionette Master enters the battlefield, creating three 1/1 Servo artifact creature tokens
3. Activate Necrotic Ooze using Black Carriage's ability by sacrificing Marionette Master, untapping Necrotic Ooze
4. Repeat an arbitrarily large number of times
5. With Marionette Master on the battlefield, activate Necrotic Ooze using Black Carriage's ability by sacrificing a Servo, untapping Necrotic Ooze
6. The Servo dies, triggering Marionette Master, causing each opponent to lose life equal to Marionette Master's power
7. Repeat from step 5

Results

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