Melira, Sylvok Outcast, Puppeteer Clique, and Carrion Feeder

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Puppeteer Clique on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing Puppeteer Clique
2. When Puppeteer Clique dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira
3. When Puppeteer Clique enters, it triggers, putting a creature from an opponent's graveyard onto the battlefield under your control
4. Resolve the Carrion Feeder ability
5. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Put all creature cards from each opponent's graveyard onto the battlefield under your control