Edward

Edward does go through the portal- and probably just in time, too. His feruchemy would let him resist the diseases, at least until the healing he had stored away ran out, but drowning is still a problem and he has no defences against time.

Inside the palace at the centre of Nurgle's Garden, Edward drops into a crouch and blinks into some shadows or cover, anywhere that he can hide from the Unclean Ones guarding Isha's cage as he regains his bearings and tries to figure out what he has to work with nearby.