Melira, Sylvok Outcast, Wingrattle Scarecrow, and Phyrexian Altar

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Wingrattle Scarecrow on the battlefield
• Phyrexian Altar on the battlefield
• You control a black creature

Steps

1. Activate Phyrexian Altar by sacrificing Wingrattle Scarecrow, adding one mana of any color
2. Wingrattle Scarecrow dies, triggering its persist ability, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira
3. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers