Nameless Spirit:
Well... I need a parchment to write the spell on. Go to the Wall of Argos and slaughter the Canyon Antelope or the Canyon Antelope Slave and bring me the Skin of the Antelope! It'll make a lovely parchment!
Ah! By the way, once you pass through the force field, only the Command Channel Leader in command of all the parties needs the scroll. Therefore, only one skin is needed.