The Time Machine.

What will you change?
If you got a time machine with a wide range.

How will you feel?
If you got to know,
That you broke the time seal.

Yeah! It would be easy,
to have a second chance.
Yes! You can see the war,
And tell people, you had a glance.

Of which is happening with a glow,
"This shouldn't happen"
You came to know.

Yeah! That glow could be a blast,
Or LED blinking too fast.