Taking The Bait, Blighted Feathers

'It looks like he took the bait.'

When Izroth witnessed Zareign's reaction to his blatant disregard after having successfully landed a single strike against him, it was something he had already anticipated.

Someone of Duke Zareign's standing only had to answer to the Night King and Night Lords. However, since both parties did not typically interfere with the way Malentansium was run, in reality, Duke Zareign was used to reigning freely over all those around him.

Additionally, Zareign was a legendary realm powerhouse who had grown accustomed to being treated with a certain level of respect and fear wherever he went.

In the Duke's eyes, the fact that Izroth simply approached him of his own will could be seen as a great insult. Also, even though the strike was shallow, it was still considered a monumental humiliation for Zareign to have been wounded by Izroth.