When one of them tried to stop River from approaching Vanesha, by shooting a bullet near her leg, she glared at that man and roared viciously. "GO DIE!"
All of them took two steps back and were on high alert as to what would happen next. They expected there would be a blaze of fire, but what happened was quite the opposite.
There was no fire or whatsoever all over the place like they had anticipated, but the man, who tried to scare River earlier, fell to the ground with a soft thud and burnt skin. He looked like he had been burnt from the inside.
Of course, this left all of them shocked, since they had never seen this kind of power and the way River showed her power was big news for them, except for Sol, since Vanesha would update him with every progress that River made.