Puppeteer Clique, Altar of Dementia, and Thran Vigil

Prerequisites

• Puppeteer Clique on the battlefield
• Altar of Dementia on the battlefield
• Thran Vigil on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Puppeteer Clique
2. When Puppeteer Clique dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Thran Vigil and Puppeteer Clique trigger
4. Resolve the Thran Vigil trigger, putting a +1/+1 counter on Puppeteer Clique
5. Resolve the Puppeteer Clique trigger, allowing you to put a creature card from an opponent's graveyard onto the battlefield under your control
6. Resolve the Altar of Dementia ability Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Put all creature cards from each opponent's graveyard onto the battlefield under your control