Sakashima of a Thousand Faces, Hellkite Courser, and Altar of Dementia

Prerequisites

• Sakashima of a Thousand Faces in hand or in the command zone
• Hellkite Courser on the battlefield
• Altar of Dementia on the battlefield
• Sakashima of a Thousand Faces is one of your commanders
• plus enough mana to pay for commander tax, if applicable available

Steps

1. Cast Sakashima either from your hand or from the command zone by paying and commander tax, if applicable
2. Choose to have Sakashima enter the battlefield as a copy of Hellkite Courser
3. Sakashima enters the battlefield, triggering its ability
4. Holding priority, activate Altar of Dementia by sacrificing Sakashima
5. Choose to return Sakashima to the command zone from your graveyard
6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Sakashima's power
7. Resolve the Sakashima trigger from step 3, putting Sakashima from the command zone onto the battlefield
8. Repeat from step 2

Results

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