Jackdaw Savior, Loyal Retainers, and Altar of Dementia

Prerequisites

• Jackdaw Savior on the battlefield
• Loyal Retainers in the graveyard
• Altar of Dementia on the battlefield

Steps

1. During your precombat main phase, activate Altar of Dementia by sacrificing the legendary creature with flying
2. When the creature dies, Jackdaw Savior triggers, returning Loyal Retainers from your graveyard to the battlefield
3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power
4. Activate Loyal Retainers by sacrificing it, returning the legendary creature with flying from your graveyard to the battlefield
5. Repeat

Results

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