Spawning Grounds + Intruder Alarm + Arbor Elf

Spawning Grounds

Intruder Alarm

Arbor Elf

How it works

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.

By enchanting your Forest with Spawning Grounds, you transform it into a heavy-hitting token factory that funds its own activation when paired with Arbor Elf. Every time you tap that land for a 5/5 Beast, Intruder Alarm triggers off the new arrival to untap both the Elf and the land. This creates a neat self-sustaining loop where the Elf untaps the Forest, allowing you to flood the board with an endless army of trampling beasts.