Arbor Elf + Intruder Alarm + Spawning Grounds

GU identity

Commander legal

The 3 combo pieces

• Arbor Elf
• Intruder Alarm
• Spawning Grounds

What must be in place

Spawning Grounds attached to any Forest you control.
Arbor Elf does not have summoning sickness.

How to execute it

1. Activate the Forest with Spawning Grounds attached by tapping it, creating a 5/5 Beast creature token.
2. The Beast enters the battlefield, triggering Intruder Alarm, untapping all creatures.
3. Activate Arbor Elf by tapping it, untapping the Forest.
4. Repeat.

What the combo produces

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