How it works
Prerequisites
- You control at least five modified creatures.
- An opponent is unable to block and kill creatures you control.
- You control a Mountain.
Steps
- 1Declare Combat Celebrant and Unforgiving One as attackers, choosing to exert Combat Celebrant as it attacks.
- 2Combat Celebrant triggers, untapping all other creatures you control and causing you to get an additional combat phase after this one.
- 3Unforgiving One triggers, returning Mirror Image from your graveyard to the battlefield as a copy of Combat Celebrant.
- 4Activate Altar of Dementia by sacrificing Combat Celebrant, causing target player to mill cards equal to Combat Celebrant's power.
- 5Move to your next combat phase.
- 6Declare Mirror Image and Unforgiving One as attackers, choosing to exert Mirror Image as it attacks.
- 7Mirror Image triggers, untapping all other creatures you control and causing you to get an additional combat phase after this one.
- 8Unforgiving One triggers, returning Combat Celebrant from your graveyard to the battlefield.
- 9Activate Altar of Dementia by sacrificing Mirror Image, causing target player to mill cards equal to Mirror Image's power.
- 10Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?