Gutter Grime, Reassembling Skeleton, Yahenni, Undying Partisan, and Pitiless Plunderer

Prerequisites

• Gutter Grime on the battlefield
• Reassembling Skeleton in the graveyard
• Yahenni, Undying Partisan on the battlefield
• Pitiless Plunderer on the battlefield

Steps

1. Activate Yahenni by sacrificing Reassembling Skeleton
2. When Reassembling Skeleton dies, Pitiless Plunderer and Gutter Grime trigger, creating a creature token and a Treasure token
3. Resolve the Yahenni ability
4. Activate Yahenni by sacrificing the creature token
5. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token
6. Resolve the Yahenni ability
7. Activate the Treasures by tapping and sacrificing them, adding
8. Activate Reassembling Skeleton by paying , returning it from your graveyard to the battlefield
9. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinitely large creature