Murderous Redcap, Melira, Sylvok Outcast, and Ashnod's Altar

Prerequisites

• Murderous Redcap on the battlefield
• Melira, Sylvok Outcast on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Murderous Redcap, adding
2. Murderous Redcap dies, triggering its persist ability, returning it from your graveyard to the battlefield with no -1/-1 counter on it due to Melira
3. Murderous Redcap enters the battlefield, dealing 2 damage to any target
4. Repeat

Results

• Infinite colorless mana
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers