This has been playing in my brain all day, help me complete it?

There was three men come out of the west
The future for to buy,
And these three men made a solemn vow:
John Mastodon should die.
They NDAd, they scorned, didn’t research him,
Throwed slanders at his head.
And these three men made a solemn vow:
John Mastodon was dead.

#JohnMastodon #JohnBarleycorn #folk #filk