How can you create a combo with Zirda, the Dawnwaker, Gemstone Array, Crackdown Construct?
user
[START OF COMBO]This combo can be formed with Zirda, the Dawnwaker, Gemstone Array, Crackdown Construct

Color identity: RW
Mana cost: {1}
Steps:
  1. Activate Gemstone Array's first ability to put a counter on it.
  2. Activate Gemstone Array's second ability to add {1}.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinitely large Crackdown Construct[END OF COMBO RESULT][END OF COMBO]

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