Xavier Sal, Infested Captain, Intruder Alarm, and Master Chef

Prerequisites

• Xavier Sal, Infested Captain on the battlefield
• Intruder Alarm on the battlefield
• Master Chef on the battlefield
• You control your commander
• There is at least one counter on a permanent you control
• You control at least one creature token

Steps

1. Activate Xavier Sal's first ability by tapping it and removing a counter from a permanent you control, creating a copy of any creature token you control that enters the battlefield with a +1/+1 counter on it
2. When the creature token enters the battlefield, Intruder Alarm triggers, untapping all creatures
3. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite untap of all creatures