Xavier Sal, Infested Captain, Intruder Alarm, Felidar Retreat, and Awaken the Woods

Prerequisites

• Xavier Sal, Infested Captain on the battlefield
• Intruder Alarm on the battlefield
• Felidar Retreat on the battlefield
• Awaken the Woods in hand
• You control at least one Forest Dryad token
• Xavier Sal does not have summoning sickness
• There is a removable counter on a permanent you control

Steps

1. Activate Xavier Sal by tapping it and removing a counter from a permanent you control, creating a token copy of the Forest Dryad token
2. When the Forest Dryad enters the battlefield, Intruder Alarm and Felidar Retreat trigger
3. Resolve the Felidar Retreat trigger, putting a +1/+1 counter on each creature you control
4. Resolve the Intruder Alarm trigger, untapping all creatures
5. Repeat

Results

• Infinite ETB
• Infinite creature tokens
• Infinite untap of all creatures
• Infinite mana creatures you control can produce
• Infinite Forest tokens
• Infinite landfall triggers
• Infinite +1/+1 counters