It's a helebore, don't known what it's name is.

Could well be H. x orientalis. If it is flowering now then it is mixed up, though we have one which often flowers now and again in Spring.

I have this Helebour, mine ended up turning pink.?

Thank You, Cammomile, Owdboggy, and Ladyessex1
Somebody left them over beside my plot at the allotment.

Hellebore.

Thank you Arbuthnot.