Xavier Sal, Infested Captain + Intruder Alarm + Felidar Retreat + Staff of Titania

Prerequisites

• You control at least one Forest Dryad token.
• Xavier Sal does not have summoning sickness.
• There is a counter on a permanent you control.

Steps

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

Effects

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