Nautilus' basic attacks deal bonus physical damage and immobilize his targets. This effect cannot happen more than once every few seconds on the same target.
Nautilus hurls his anchor forward. If it hits a champion, he drags both himself and the opponent close together. If it hits terrain, Nautilus instead pulls himself to the anchor and the cooldown of Dredge Line is reduced by half.
Nautilus surrounds himself with dark energies, gaining a shield that blocks incoming damage. While the shield persists, his attacks apply a damage over time effect to enemies around his target.
Nautilus slams the ground, causing the earth to explode around him in a set of three explosions. Each explosion damages and slows enemies.