Slimefoot and Squee + Pitiless Plunderer + Altar of Dementia + Creature with Persist or Undying

Prerequisites

• The persist or undying creature doesn't have a -1/-1 or +1/+1 counter on it, respective to its ability.
• You control a Saproling.
• Creature with Persist or Undying

Steps

1. 1Activate Altar of Dementia twice by sacrificing the persist or undying creature and Slimefoot and Squee.
2. 2When Slimefoot and Squee and the other creature die, Pitiless Plunderer triggers twice and the other creature's persist or undying ability triggers.
3. 3Resolve the Pitiless Plunderer triggers, creating two Treasure artifact tokens.
4. 4Resolve the persist or undying trigger, returning the creature from your graveyard to the battlefield with either a -1/-1 or +1/+1 counter on it.
5. 5Activate Altar of Dementia by sacrificing the undying or persist creature.
6. 6When the creature dies, Pitiless Plunderer triggers, creating a Treasure token.
7. 7Resolve the Altar of Dementia ability.
8. 8Activate the Treasures by tapping and sacrificing them, adding .
9. 9Activate Slimefoot and Squee by paying and sacrificing a Saproling.
10. 10When the Saproling dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
11. 11Resolve the Slimefoot and Squee ability, returning it and the persist or undying creature from your graveyard to the battlefield.
12. 12When Slimefoot and Squee enters, it triggers, creating a 1/1 Saproling creature token.
13. 13Activate a Treasure by tapping and sacrificing it, adding .
14. 14Repeat.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill