Xavier Sal, Infested Captain + Intruder Alarm + Ivy Lane Denizen

Xavier Sal, Infested Captain

Intruder Alarm

Ivy Lane Denizen

How it works

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

This elegant loop transforms Xavier Sal, Infested Captain into a relentless token-making engine by leaning on the persistent support of Ivy Lane Denizen and Intruder Alarm. Each time Xavier Sal populates a green creature token, the newcomer's arrival triggers Intruder Alarm to untap all creatures—including Xavier Sal itself—while simultaneously activating Ivy Lane Denizen to place a fresh counter onto a creature. That newly placed counter then serves as the exact fuel Xavier Sal needs to tap and repeat the entire sequence.