Melira, Sylvok Outcast, Woodfall Primus, and Viscera Seer

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Woodfall Primus on the battlefield
• Viscera Seer on the battlefield

Steps

1. Activate Viscera Seer 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 Viscera Seer ability
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite scry 1
• Destroy any number of noncreature permanents
• Lock