Slimefoot and Squee, Pitiless Plunderer, and Bartolomé del Presidio

Prerequisites

• Slimefoot and Squee on the battlefield
• Pitiless Plunderer on the battlefield
• Bartolomé del Presidio on the battlefield
• available

Steps

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

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers