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

Color identity: GU
Mana cost: 
Steps:
  1. Activate Trench Behemoth by returning Seraph Sanctuary from the battlefield to your hand, untapping it.
  2. Play Seraph Sanctuary, triggering its first ability and Fastbond.
  3. Resolve the Seraph Sanctuary trigger, causing you to gain 1 life.
  4. Resolve the Fastbond trigger, dealing 1 damage to you.
  5. Activate Seraph Sanctuary by tapping it, adding {C}.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - 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