Futura of some type. Many nurseries have put their own names on them. Notice the thin yellow edge. Also extra slipped stripes on some. Midnight Shine comes to mind. What do you think WN.
Stush

I LOVE it!! To me It looks like a 'midnight shine' that is sporting. I love the pup with the extra stripes!!!! GREAT looking plant!

Stop it!!!! Lol, you're making me jealous.
Great shopping, wish I was there.
Karen

I'm wondering if this could be the variety called 'Black Jack.' Possibly I can find out from the store where I bought it if they know the name. I'll update if so. Personally I've been referring to it as "racing stripe" snake plant.

Also, the stripes line up on both sides of the leaf, if that helps with ID. Looks pretty cool with the light shining through it. :)

Well that's some thing new. Mostly those slipped strips are on one side only, the inside.

Okay, maybe I lied, now that I look again. It's only on some of the leaves. I'm sure I'm demonstrating that I have way too much time on my hands, but here are photos of the front and back of some leaves (left to right).

Wow, that is different then mine. The one I got has a thin yellow line on the inside only. Those look great.
Nice find.
Stush