Altar of Dementia + Obstinate Gargoyle + Thran Vigil

WB identity

Commander legal

The 3 combo pieces

• Altar of Dementia
• Obstinate Gargoyle
• Thran Vigil

How to execute it

1. Activate Altar of Dementia by sacrificing Obstinate Gargoyle.
2. When Obstinate Gargoyle dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Thran Vigil triggers, putting a +1/+1 counter on Obstinate Gargoyle.
4. Resolve the Altar of Dementia ability.
5. Repeat.

What the combo produces

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