Worthy Cause, Pitiless Plunderer, Sedgemoor Witch, and Memory Crystal

Prerequisites

• Worthy Cause in hand
• Pitiless Plunderer on the battlefield
• Sedgemoor Witch on the battlefield
• Memory Crystal on the battlefield
• You control at least one additional creature
• available

Steps

1. Cast Worthy Cause with buyback by paying and sacrificing another creature
2. Sedgemoor Witch and Pitiless Plunderer trigger, as well as the sacrificed creature if it was a Pest
3. Resolve the Pest trigger, if applicable, causing you to gain one life
4. Resolve the Sedgemoor Witch trigger, creating a 1/1 Pest creature token
5. Resolve the Pitiless Plunderer trigger, creating a Treasure token
6. Resolve Worthy Cause, causing you to gain life equal to the sacrificed creature's toughness and return Worthy Cause to your hand
7. Activate the Treasure by tapping and sacrificing it, adding
8. Repeat

Results

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