Luminous Broodmoth, Phyrexian Altar, and Slimefoot and Squee

Prerequisites

• Luminous Broodmoth on the battlefield
• Phyrexian Altar on the battlefield
• Slimefoot and Squee on the battlefield
• You control at least one additional nontoken creature that does not have flying

Steps

1. Activate Phyrexian Altar twice by sacrificing Slimefoot and Squee and another nontoken creature without flying, adding
2. When Slimefoot and Squee and the other creature die, Luminous Broodmoth triggers twice
3. Resolve the first trigger, returning Slimefoot and Squee from your graveyard to the battlefield with a flying counter on it
4. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token
5. Resolve the second Luminous Broodmoth trigger, returning the other creature from your graveyard to the battlefield with a flying counter on it
6. Activate Phyrexian Altar twice by sacrificing Slimefoot and Squee and the other creature, adding
7. Activate Slimefoot and Squee by paying and sacrificing a Saproling, returning it and the other creature from your graveyard to the battlefield
8. Repeat

Results

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