If you ran suicides OR is the easy choice but if not, I'd say Colossus
Surprised to see so many voted for SG. I got super lucky and got her as a 6* as well, but I don't feel like she does anything specially well to dump more into her. I could be missing something.Though my current setup I'm running suicides with only 1 point in deep wounds, max DW might be a game changer for her. I do like how she can stack bleeds through blocks though.