How can you create a combo with Trench Behemoth, Fastbond, Scoured Barrens?
user
[START OF COMBO]This combo can be formed with Trench Behemoth, Fastbond, Scoured Barrens

Color identity: GWUB
Mana cost: 
Steps:
  1. Activate Trench Behemoth by returning Scoured Barrens from the battlefield to your hand, untapping it.
  2. Play Scoured Barrens, triggering it and Fastbond.
  3. Resolve the Scoured Barrens trigger, causing you to gain 1 life.
  4. Resolve the Fastbond trigger, dealing 1 damage to you.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite lifegain triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant