User blog comment:Skeith9/Heroic Spirits Speculation/@comment-24754018-20140730213737/@comment-1458758-20140731011907

Do you mean Fate/Stay Night Assassin? Cause Fate/Extra's definitely has a phantasm. Besides that, while their status as Noble Phantasms may be debated, Tsubame Gaishi and No Second Strike are connected to the legend of these people, and are only really excluded at the discretion of the writer.

Semiramis I can't defend, I do find her dual-classing kinda daft.

But other than that, Assassin of Black, while oddly named due to the chosen origin, her Maria the Ripper is a direct reference to the frighteningly surgical precision of the attacks involving Jack the Ripper.

So I dunno, I think phantasms for Assassins are only really difficult cause Nasu seemingly makes it that way.