Altar of Dementia + Phyrexian Metamorph + Technomancer

Mana needed: {5}{B}{B}

UB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Phyrexian Metamorph
• Technomancer

How to execute it

1. Cast Technomancer by paying {5}{B}{B}.
2. When Technomancer enters, it triggers, causing you to mill three cards and return Phyrexian Metamorph from your graveyard to the battlefield as a copy of Technomancer.
3. When Phyrexian Metamorph enters, it triggers. Holding priority, activate Altar of Dementia by sacrificing Phyrexian Metamorph.
4. Resolve the Phyrexian Metamorph trigger, causing you to mill three cards and return Phyrexian Metamorph from your graveyard to the battlefield as a copy of Technomancer.
5. Repeat from step 3.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Put all artifact creature cards with mana value 2 or less from your graveyard onto the battlefield
• Put all artifact creature cards with mana value 2 or less from your library onto the battlefield