Junji, the Midnight Sky, Phyrexian Delver, Proper Burial, and Ashnod's Altar

Prerequisites

• Junji, the Midnight Sky on the battlefield
• Phyrexian Delver on the battlefield
• Proper Burial on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Phyrexian Delver, adding
2. Proper Burial triggers, causing you to gain life equal to Phyrexian Delver's toughness
3. Activate Ashnod's Altar by sacrificing Junji, adding
4. Proper Burial and Junji trigger
5. Resolve the Proper Burial trigger, causing you to gain life equal to Junji's toughness
6. Resolve the Junji trigger, causing you to lose 2 life and to put Phyrexian Delver from your graveyard onto the battlefield under your control
7. Phyrexian Delver enters the battlefield, causing you to return Junji from your graveyard to the battlefield and lose five life
8. Repeat

Results

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