Pitiless Plunderer, Repository Skaab, and Undying Malice

Prerequisites

• Pitiless Plunderer on the battlefield
• Repository Skaab in hand
• Undying Malice in hand
• available

Steps

1. Cast Repository Skaab by paying
2. When Repository Skaab enters, its exploit ability triggers
3. Holding priority, cast Undying Malice by paying , targeting Repository Skaab
4. Resolve the Repository Skaab trigger, causing it to exploit itself
5. Pitiless Plunderer, Repository Skaab's second ability and Repository Skaab's ability gained from Undying Malice trigger
6. Resolve the Pitiless Plunderer trigger, creating a Treasure token
7. Activate the Treasure by tapping and sacrificing it, adding
8. Resolve the first Repository Skaab trigger, returning Undying Malice from your graveyard to your hand
9. Resolve the second Repository Skaab trigger, returning it from your graveyard to the battlefield
10. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite magecraft triggers