User blog comment:DarkCreeper/The River King/@comment-5654809-20150619171755/@comment-7709681-20150619182803

Likely from the three passives, two are components of the Innate, and the last one from one of his active abilities.

Also, about interactions with the river: If his kit truly ends up interacting with bodies of water, consider that the only one in the game is the river, in order to make that actual gameplay rather than just an easter egg his abilities must generate water to work with.

And to me he'll be a tank jungler.