Melira, Sylvok Outcast, and Phyrexian Altar

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing the persist creature
2. When the persist creature dies, its persist ability triggers, returning the creature from your graveyard to the battlefield without a -1/-1 counter on it due to Melira
3. Repeat

Results

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