How can you create a combo with Silvanus's Invoker, Serra's Sanctum?
user
[START OF COMBO]This combo can be formed with Silvanus's Invoker, Serra's Sanctum

Color identity: GW
Mana cost: 
Steps:
  1. Activate Serra's Sanctum by tapping it, adding at least nine {W}.
  2. Activate Silvanus's Invoker by paying {8}, causing Serra's Sanctum to become a 8/8 Elemental with haste, and untapping Serra's Sanctum.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite mana lands you control can produce
  - Infinite untap of lands you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least nine enchantments.
[END OF COMBO PREREQUISITES]
assistant