I need your help with these selectors

Priyabrata

So there's a bunch of champion that I've been hunting for and thanks to the new event I now have the opportunity to get my hands on one of them, so here's the thing

But seriously tho I can't decide which one to choose so I was hoping you people could help me out with some reasoning

Sarah245

Cause of immunities and he's easier to ramp up now.
Decent damage too