Kenrith, the Returned King, Altar of Dementia, and Peregrine Drake

Prerequisites

• Kenrith, the Returned King in hand or on the battlefield or in the command zone
• Altar of Dementia on the battlefield
• Peregrine Drake in the graveyard
• You control up to five lands that can tap to produce at least

Steps

1. Activate up to five lands by tapping them, adding at least
2. Activate Kenrith's fifth ability by paying , returning Peregrine Drake from your graveyard to the battlefield
3. When Peregrine Drake enters the battlefield, it triggers, untapping up to five lands
4. Activate Altar of Dementia by sacrificing Peregrine Drake, causing target player to mill cards equal to Peregrine Drake's power
5. Repeat

Results

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