Crossing the Plains of Rhovanion
"I think we should be at a disadvantage if we were to stay within the 'forest' of the tobacco plants," Radagast finally speaks up as preparations are made for the expected onslaught of gorguns.
"We will not be able to see them all, nor will we be able to guard each other's back."
"We do not want the wolves to join us, Sky, as the very touch of the gorguns will turn them into wargs to fight against us. We would then be forced to kill them. Alas, there is no way I know of to remove the touch of darkness from them once they have changed. I bear wolves no ill will; they are but another nature's creatures. Respect them, and they will respect you. But they will still eat you if you give them a chance."
"Interesting use of the 'warp wood' spell, Sky. I doubt if the sages would classify these giant tobacco plants as trees, in spite of their size, but it appears magic only takes the size into account."
"Do not remain within your little fort too long, though, or you may find yourself trapped."
"As long as we remain here until the gorguns get closer, then these walls of thorns will channel them to us. Keep in mind that they will only work for a little while; it is quite likely that the gorguns can leap over them to get to us."
When he finishes speaking, he casts his own 'Wall of Thorns' spell on the other side from where Elmohtar had cast his, thus creating a funnel that would--hopefully--channel the gorguns into what was general called a 'kill zone'. While killing was anathema to him, the dark touch of Morgoth could only be dealt with by killing.