Rammus

bowling ball rammus is the only counter to quite literally unkillable nautilus. his insatiable bloodlust can only be relieved by ruthlessly slaying anybody who stands in his path, and it doesn't matter how much health you have because it won't be nearly enough to stop him... that is, of course, unless you use your basic attack - rylai passive e + randuin's, which (as we all know) would stop anybody dead in their tracks, including a bowling ball with a velocity fifteen times that of mach speed