Subscribe to download
Cassie Cage (Yaas Queen) 273+ Mid Screen Combo. 1 Meter Burn. No FB/KB. Restand Ender.

F + 4, 1, D B + 4 MB - B + 1, 3 - B + 3 - B + 2, 4, B D + 3

Starter can be F + 4, 1 or F + 3, 4 or 2, 1
1, 1, 1 is a possible starter, but the whole combo is pretty much frame perfect, so possible, but really tough. You're welcome to try.

The B + 1, 3 is a really tight link. Hard to get consistently without a lot of practice.
The B + 2, 4 is also hard to hit, but there is another possible ender that doesn't end in a restand though ;

Alternate ender : (B + 1, 3) - Forward Dash Cancel - 3, 4, B F + 4. A tiny bit more HP, and a bit easier to execute, but doesn't leave in a restand position.