Luthor said:Vine Whip. In the games very weak move. In the anime it's really useful and can do loads of things.
I think it was the most versatile move that any of Satoshi's Pokemon has known so far, but I didn't like when his Tsutarja used it since I didn't like seeing the vines come out of her collar. Something about how that looked rubbed me the wrong way compared to when Fushigidane and Bayleaf used the move.