How can you create a combo with Spawning Grounds, Intruder Alarm, Arbor Elf?
user
[START OF COMBO]This combo can be formed with Spawning Grounds, Intruder Alarm, Arbor Elf

Color identity: GU
Mana cost: 
Steps:
  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.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite mana creatures you control can produce
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Spawning Grounds attached to any Forest you control.
  - Arbor Elf does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant