How to unseal the gate in the Archylte Steppe?

This is indeed how you unseal the gate in the archlyte steppe. In total there are 3 gigantuars statues. You can encounter 2 of them only with specific weather conditions.

Here are the locations and the weather conditions:

  • Stoneslump Wastelands - Any weather condition.
  • Clearwater Marshes (northeast) - Sunny weather condition. (also requires a moogle hunt)
  • Clearwater Marshes (central) - Rainy weather condition. (also requires a moogle hunt)