A little concern about the new champs Qiyana

Hi, i'm not sure this will reach Riot games staff but here is my concern about Qiyana. Qiyana's W let her focus an element between Wall, River and Bush for her abilities but on the 3v3 map and ARAM map, there isn't any kind of ''River''. Does that means she wont be able to utilize her full kit there or will she have another way to activate her ''River'' form?