This quest is no longer available in game.
Use a Shado-Pan Sky Serpent to kill 60 Krik'thik attackers, 3 Krik'thik War Wagons, and 3 Krik'thik Catapults.
The mantid forces are pouring against the wall. I've arranged for some flying serpents to cut away at their forces from the air.
Would you be willing to take the reigns on one of them?