Initial Card State
- All permanents on the battlefield (Derevi without a -1/-1 counter on it and Aerith Gainsborough with a +1/+1 counter on it).
Steps
- Activate Cauldron of Souls by tapping it, giving Derevi and Aerith persist until end of turn.
- Activate Altar of Dementia by sacrificing Derevi.
- When Derevi dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- When Derevi enters the battlefield, it triggers, untapping Cauldron of Souls.
- Activate Altar of Dementia by sacrificing Aerith.
- When Aerith dies, it triggers twice.
- Resolve Aerith's persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- Resolve the second Aerith trigger, putting a +1/+1 counter on each legendary creature you control, thus removing the -1/-1 counters from Aerith and Derevi.
- Resolve the Altar of Dementia abilities from steps 2 and 5.
- Repeat.
Notes
- The combo does not put +1/+1 counters on Derevi or Aerith, but does on any other legendary creature(s) you control.
Results
- Infinite LTB.
- Infinite ETB.
- Infinite sacrifice triggers.
- Infinite death triggers.
- Infinite mill.
- Infinite self-mill.
- Infinite +1/+1 counters on legendary creatures you control.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).