Slimefoot and Squee, Phyrexian Altar, and Priest of Urabrask

Prerequisites

• Slimefoot and Squee on the battlefield
• Phyrexian Altar on the battlefield
• Priest of Urabrask on the battlefield
• You control at least one Saproling
• , plus either , or available available

Steps

1. Activate Phyrexian Altar twice by sacrificing Priest of Urabrask and Slimefoot and Squee, adding two mana in any combination of , or
2. Activate Slimefoot and Squee by paying and sacrificing a Saproling, returning it and Priest of Urabrask from your graveyard to the battlefield
3. When Priest of Urabrask and Slimefoot and Squee enter the battlefield, their abilities trigger
4. Resolve the Priest of Urabrask trigger, adding
5. Resolve the Slimefoot and Squee trigger, creating a 1/1 Saproling creature token
6. Repeat

Results

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