Dargo, the Shipwrecker, Underworld Breach, Lotus Petal, and Altar of Dementia

Prerequisites

• Dargo, the Shipwrecker in the command zone
• Underworld Breach on the battlefield
• Lotus Petal on the battlefield
• Altar of Dementia on the battlefield
• You have sacrificed at least three artifacts and/or creatures this turn, plus an additional artifact or creature for each time you've cast Dargo from the command zone this game

Steps

1. Activate Lotus Petal by tapping and sacrificing it, adding
2. Cast Dargo from the command zone by paying
3. Activate Altar of Dementia by sacrificing Dargo
4. Choose to return Dargo to the command zone from your graveyard
5. Resolve the Altar of Dementia ability, causing you to mill cards equal to Dargo's power
6. Cast Lotus Petal from your graveyard by paying and exiling three other cards from your graveyard
7. Repeat
8. Once you have milled your library, you may target other players using Altar of Dementia's ability

Results

• Infinite self-mill
• Near-infinite commander casts
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mill
• Near-infinite sacrifice triggers
• Near-infinite storm count