How can you create a combo with Grim Monolith, Nyxbloom Ancient?
user
[START OF COMBO]This combo can be formed with Grim Monolith, Nyxbloom Ancient

Color identity: G
Mana cost: 
Steps:
  1. Activate Grim Monolith's first ability by tapping it, adding {9}.
  2. Activate Grim Monolith's last ability by paying {4}, untapping it.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana[END OF COMBO RESULT][END OF COMBO]

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