Intruder Alarm + Spawning Grounds + Stone-Seeder Hierophant

GU identity

Commander legal

The 3 combo pieces

What must be in place

Spawning Grounds attached to any Forest you control.
Stone-Seeder Hierophant does not have summoning sickness.

How to execute it

  1. Activate the land 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 Stone-Seeder Hierophant by tapping it, untapping the land with Spawning Grounds attached.
  4. Repeat.

What the combo produces