Melira, Sylvok Outcast, Woodfall Primus, and Carrion Feeder

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Woodfall Primus on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing Woodfall Primus
2. When Woodfall Primus 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 Woodfall Primus enters, it triggers, destroying a noncreature permanent
4. Resolve the Carrion Feeder ability
5. Repeat

Results

• Infinite death triggers
• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Destroy any number of noncreature permanents
• Lock