Concept for Nami Ultimate Addition.
So, and correct me if I'm wrong, I remember Tahm Kench's Ultimate has better distance if he travels along the river. It makes sense, given his lore, and the ability itself. So I wondered about Nami. Nami's ultimate is pretty nice. It has great range already, and a nice wide AOE. But, I think Nami should be able to Ult an entire river.
So, the addition to her ultimate would simply be: -If Nami uses her Ultimate down the River, the range and AOE become the River's width and remaining length. If the remaining length of the River is less than the range of her Ultimate, then the range remains the same.