Jinnie Fay, Jetmir's Second, Requiem Angel, and Altar of Dementia

Prerequisites

• Jinnie Fay, Jetmir's Second on the battlefield
• Requiem Angel on the battlefield
• Altar of Dementia on the battlefield
• You control another non-Spirit creature

Steps

1. Activate Altar of Dementia by sacrificing any other non-Spirit you control
2. The creature dies, triggering Requiem Angel, creating either a 2/2 Cat or a 3/1 Dog creature token
3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill