Slimefoot and Squee, Phyrexian Altar, and Burning-Tree Emissary

Prerequisites

• Slimefoot and Squee on the battlefield
• Phyrexian Altar on the battlefield
• Burning-Tree Emissary on the battlefield
• You control at least one Saproling
• , plus either , or available available

Steps

1. Activate Phyrexian Altar twice by sacrificing Burning-Tree Emissary 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 Burning-Tree Emissary from your graveyard to the battlefield
3. When Burning-Tree Emissary and Slimefoot and Squee enter the battlefield, their abilities trigger
4. Resolve the Burning-Tree Emissary 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 sacrifice triggers