At the Wyrmrest Temple, after unsealing Y'Shaarj.

Saga brought him to the mountains within the Emerald Dream, preparing to transform him into his own avatar.

The Green Dragon Queen created a massive bubble-like dream barrier, enveloping the entire mountainous region where Saga and Y'Shaarj were. She circled in the sky outside, guarding Saga against any unexpected occurrences.

Inside the bubble dream barrier.