Nice characterization of the lord.
They ever dwell on the edge of panic, beyond the threshold of reason.
Since we’re in his POV, more or less, you could just say, "though he himself did not know the foggiest thing about goblin magic." It’ll be understood as a thought.
though he thought to himself I do not know the foggiest thing about goblin magic .
Need a paragraph break before and after this line.
“I fought against the goblins under old King Orthren many a year ago.”
This is odd. He was surprised by the hand. Why shouldn’t he be surprised by this, I wonder?
“He’s been turned into a tree?” asked Latha, any sense of surprise conspicuously absent from his voice.