Roko's Basilisk is very, very similar to Pascal's wager, but it has an extra wrinkle:
The Basilisk task you to with bringing the Basilisk into being. Pascal's wager merely asks you to believe (and perhaps do some rituals, like pray or whatever), but not to make the deity more likely.
No it is not. Pascal was not making an objective argument for why someone should believe. He was making an argument for why he believed (based on personal religious experiences that he had had).
To me, the Wager sounds like a pure philosophical joke, and the Basilisk sounds like a typical cult murder justification. It's not falsifiable, and it explains anything post facto. "xyz was tail of the Basilisk" can pseudo-rationalize anything you want.
I am presently being compelled by future Basilisk to take another slice of cheese. I have no choice but to oblige for fear of my own life :p
The Basilisk task you to with bringing the Basilisk into being. Pascal's wager merely asks you to believe (and perhaps do some rituals, like pray or whatever), but not to make the deity more likely.