Halsin, Emerald Archdruid, Pitiless Plunderer, and Lightning Greaves

Prerequisites

• Halsin, Emerald Archdruid on the battlefield
• Pitiless Plunderer on the battlefield
• Lightning Greaves on the battlefield
• 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 Lightning Greaves' equip ability by paying , attaching it to the Treasure Bear
3. Activate the Treasure Bear token by tapping and sacrificing it, adding
4. The Treasure Bear dies, triggering Pitiless Plunderer, creating a Treasure token
5. Repeat

Results

• Infinite death triggers
• Infinite LTB
• Infinite sacrifice triggers