Favorite Noble Phantasm and why?

"Yes, I certainly cannot match Saber.
But please be rest assured. My Noble Phantasm exceeds those of other Servants. No matter who the opponent is, they will not be able to stop my charge."

Rider raises her dagger.
"What?"
Everyone here lets out a voice of surprise.
For some reason, Rider takes her dagger to her neck and

Slashes it in one breath.

…Fresh blood splatters around.
Blood gushes out from the neck of the black-garbed Rider.

"W-What are you…"
Even her Master, Shinji, is surprised at her actions.
Even if Servants are beyond human, that wound is fatal.
Rider will lose large amounts of blood and will just disappear.

"…!?"
But that's just a needless worry for people who know nothing.

The splattered blood stops in the air and slowly forms a circle.

It's a magic circle drawn in blood.
A pattern I've never seen before.
A creature-like figure that looks creepy.
…A big lump of magical energy, created by Rider.
The boundary field Rider was supporting until now seems small compared to this.

I hear a throbbing.
With a sound like flesh wrenching open, Rider's hair whirls up and

Dragged by Saber, I fall to the ground.
A loud sound and a flash.
I close my eyes at the raging wind.
But even with my eyes closed, I'm forced to feel it.
Something white passes by.
I feel like something is blazing through the hallway with great speed like a giant arrow of light