Teysa Karlov, Pitiless Plunderer, Bloodsoaked Champion, and Altar of Dementia

Prerequisites

• Teysa Karlov on the battlefield
• Pitiless Plunderer on the battlefield
• Bloodsoaked Champion on the battlefield
• Altar of Dementia on the battlefield
• You have attacked with at least one creature this turn

Steps

1. Activate Altar of Dementia by sacrificing Bloodsoaked Champion
2. Pitiless Plunderer triggers twice, creating two Treasure tokens
3. Resolve the Altar of Dementia ability, causing target player to mill two cards
4. Activate the Treasure tokens by tapping and sacrificing them, adding
5. Activate Bloodsoaked Champion by paying , returning it from your graveyard to the battlefield tapped
6. Repeat

Results

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