How it works
Prerequisites
- You control at least one non-Human creature.
Steps
- 1Cast Nethroi either from your hand or from the command zone for its mutate cost by paying plus commander tax, if applicable, putting it on top of a non-Human creature you control.
- 2When Nethroi enters the battlefield, it triggers.
- 3Holding priority, activate Altar of Dementia by sacrificing Nethroi.
- 4When Nethroi dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
- 5Resolve the Altar of Dementia ability, causing target player to mill cards equal to Nethroi's power.
- 6Resolve the Nethroi trigger from step 2, returning Eternal Witness and Mitotic Slime from your graveyard to the battlefield.
- 7When Eternal Witness enters the battlefield, it triggers, returning Nethroi from your graveyard to your hand.
- 8Activate Altar of Dementia twice by sacrificing Eternal Witness and Mitotic Slime.
- 9When Eternal Witness and Mitotic Slime die, Pitiless Plunderer triggers twice and Mitotic Slime triggers once.
- 10Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
- 11Resolve the Mitotic Slime trigger, creating two 2/2 Ooze creature tokens.
- 12Resolve both Altar of Dementia abilities, causing target player to mill cards equal to Eternal Witness and Mitotic Slime's combined power.
- 13Activate Altar of Dementia twice by sacrificing two Oozes.
- 14When the Oozes die, they each trigger and Pitiless Plunderer triggers twice.
- 15Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
- 16Resolve both Ooze triggers, creating four 1/1 Ooze creature tokens.
- 17Resolve both Altar of Dementia abilities, causing target player to mill cards equal to the Ooze's combined power.
- 18Activate Altar of Dementia twice by sacrificing two Oozes.
- 19When the Oozes die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
- 20Resolve both Altar of Dementia abilities, causing target player to mill cards equal to the Ooze's combined power.
- 21Activate the seven Treasures by tapping and sacrificing them, adding .
- 22Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?