Grenzo, Dungeon Warden
Soldevi Digger
Su-Chi
Altar of Dementia

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Grenzo has a power of four or greater.

   Steps

How does this combo work?
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 Soldevi Digger by paying 2, putting Su-Chi on the bottom of your library from your graveyard.
5
Activate Grenzo by paying 2, putting Su-Chi into your graveyard from the bottom of your library, and then putting it onto the battlefield.
6
Repeat.

   Results

What do I get from this combo?
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite mill
Infinite sacrifice triggers
Infinite self-mill