Assuming story, scholar wasn’t particularly involved, Selene was more than enough to keep me alive as long as I didn’t stand in the bad and honestly even when I did it wasn’t a one shot. Zero piety and less than abyssos bis when I last visited - ballpark 615 maybe. I don’t think the tank action is strictly necessary, I vaguely remember eating a tb without it and being fine - there was shielding and/or probably soil involved for that though.