Then, Thanos, I am coming for you.
7 seconds sound clip from the Guardians of the Galaxy (2014) movie soundboard.
You can hear this line at 01:12:09 in the Blu-ray version of the movie.
Quote context
[...]
- Boy, I would reconsider your current course.
- Thanos is the most powerful being in the universe.
- You call me boy! I will unfurl 1000 years of kree justice on Xandar, and burn it to its core!
- Then, Thanos, I am coming for you.
- After Xandar, you are going to kill my father?
- You see what he has turned me into. If you kill him, I will help you destroy a thousand planets.
- You betray me? Steal my money?
[...]