Pitiless Plunderer, Reassembling Skeleton, Phantom Train, and Teysa Karlov

Prerequisites

• Pitiless Plunderer on the battlefield
• Reassembling Skeleton on the battlefield
• Phantom Train on the battlefield
• Teysa Karlov on the battlefield

Steps

1. Activate Phantom Train by sacrificing Reassembling Skeleton
2. When Reassembling Skeleton dies, Pitiless Plunderer triggers twice, creating two Treasure tokens
3. Resolve the Phantom Train ability
4. Activate the Treasure tokens by tapping and sacrificing them, adding
5. Activate Reassembling Skeleton by paying , returning it from your graveyard to the battlefield tapped
6. Repeat

Results

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