Due to Rek’Sai’s W-ability ”unburrow” she can easily counter Champions whose kit involves a jump-on dash or leap simply by timing that ability. Jax being an exception to this method because of his E-ability which negates all basic attacks rendering Rek’Sai’s kit almost useless.

Most of Rek’Sai’s fighting is very close-up which makes her vulnerable to kiting and that explains why Kindred and Karthus are so far up on the Threat-list.