Fain, the Broker, Intruder Alarm, Pitiless Plunderer, and Bartolomé del Presidio

Prerequisites

• Fain, the Broker on the battlefield
• Intruder Alarm on the battlefield
• Pitiless Plunderer on the battlefield
• Bartolomé del Presidio on the battlefield
• Fain does not have summoning sickness
• You control at least one additional artifact

Steps

1. Activate Fain's third ability by tapping it and sacrificing another artifact, creating a 2/1 Inkling creature token
2. When the Inkling enters the battlefield, Intruder Alarm triggers, untapping all creatures
3. Activate Bartolomé del Presidio by sacrificing the Inkling
4. When the Inkling dies, Pitiless Plunderer triggers, creating a Treasure token
5. Resolve the Bartolomé del Presidio ability, putting a +1/+1 counter on it
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite untap of all creatures
• Infinite mana creatures you control can produce
• Infinite +1/+1 counters on Bartolomé del Presidio