Equivalent of vim dk?

[SOF3]

It is very frequent for me to want to delete a few lines together. For example, when editing a TOML file,

{previous entry}
{blank line}
[editor]
mouse = false {cursor is here}

I can delete the whole block with d2k in vim. If my cursor is on the blank line above, I could 2xd in helix, but there doesn't seem to be any option to select a whole line above (or something similar to V2kd in vim).

[Ordoviz]

mapd to delete the paragraph or vkkxd.

[Omnikar]

there doesn't seem to be any option to select a whole line above

There is extend_line_above, which is x but going upwards. It's just that it isn't bound to any key by default. I myself have it bound to X

[keys.normal]
"X" = "extend_line_above"