Disable the Shadow Cloak Generators until you unveil Aviana's Egg. Once the egg is unveiled, defend it until the Druids of the Talon can carry it to safety.
We did it, <name>! Aviana's Egg should soon be tucked safely in the boughs of her shrine.
Do you think this means she'll really return to us?
Notes
Head back to camp and look for rotating purple devices. The shield has a chance of either...
Disabling the shadow cloak reveals one of Sethria's hatchlings!
or...
Disabling the shadow cloak reveals Aviana's Egg!
Thisalee Crow says: This is it! You've found Aviana's Egg! Keep it safe while I go get help.
Defend the Egg!
Thisalee flies off and summons three druids of the claw. While they get into position, two Twilight Dragonkin spawn and start attacking the egg. Fend them off while the three druids, in flight form, pick up the egg and ferry it to safety.