Blasted, feeble-minded weaklings! They're all likely dead by now! Still, I must press on. My power alone should be enough to--(Ominous dark laughter echoes through the chamber.) That laughter... Is that you, Sargeras? You seek to mock me? We'll see who laughs last, demon, when I claim your burning eye for my own!
The whole context is here.
I've googled around, here and here, and found that comparing to try to, seek to implies thinking about doing something in the future rather than right now. In this context, however, Sageras is laughing, which means he is mocking the speaker right now. This is where I'm confused. Is try to more appropriate here?