Altar of Dementia + Arcane Adaptation + Xathrid Necromancer

UB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Arcane Adaptation
• Xathrid Necromancer

How to execute it

1. Activate Altar of Dementia by sacrificing any other creature.
2. When the creature dies as a Human due to Arcane Adaptation, Xathrid Necromancer triggers, creating a 2/2 Zombie creature token.
3. Resolve the Altar of Dementia ability.
4. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill