Grenzo, Dungeon Warden, Transplant Theorist, Su-Chi, and Altar of Dementia

Prerequisites

• Grenzo, Dungeon Warden on the battlefield
• Transplant Theorist on the battlefield
• Su-Chi on the battlefield
• Altar of Dementia on the battlefield
• Grenzo has a power of four or greater

Steps

1. Activate Altar of Dementia by sacrificing Su-Chi
2. When Su-Chi dies, it triggers, adding
3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Su-Chi's power
4. Activate Transplant Theorist by paying , putting Su-Chi on the bottom of your library from your graveyard
5. Activate Grenzo by paying , putting Su-Chi into your graveyard from the bottom of your library, and then putting it onto the battlefield
6. Repeat

Results

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