It sounds both under, and overpowered at the same time if you get what I'm trying to say. Without being near a water source you can't really draw in any water. And if you trap a person in the sea they're basically screwed unless they're able to fly in some manner. And if you can just warp people into a nearby body of water ala Iskander/Alexander the Great then that leads to all sorts of shenanigans. I'm kind of iffy on it and leaning towards saying no but if I'm getting it wrong then feel free to correct me.