Halsin, Emerald Archdruid, Pitiless Plunderer, and Concordant Crossroads

Prerequisites

• Halsin, Emerald Archdruid on the battlefield
• Pitiless Plunderer on the battlefield
• Concordant Crossroads on the battlefield
• You control a Treasure token
• available

Steps

1. Activate Halsin by paying , causing a Treasure token to become a 4/4 Bear creature token in addition to its other types until end of turn
2. Activate the Treasure Bear token by tapping and sacrificing it, adding
3. The Treasure Bear dies, triggering Pitiless Plunderer, creating a Treasure token
4. Repeat

Results

• Infinite death triggers
• Infinite LTB
• Infinite sacrifice triggers