Wood roared as Harry swerved to avoid a collision.
I saw him collide with you; I watched as he pulled two of you into the Whomping Willow —
Snape collided with Lupin, Pettigrew, and Ron, who had stopped abruptly.
Harry had a fleeting glimpse of Bole and Derrick zooming toward him, clubs raised — He turned the Firebolt upward at the last second, and Bole and Derrick collided with a sickening crunch.
…he got hurt in return — Perhaps it was the shock of Harry doing something so stupid, but Black didn’t raise the wands in time — one of Harry’s hands fastened over his wasted wrist, forcing the wand tips away; the knuckles of Harry’s other hand collided with the side of Black’s head and they fell, backward, into the wall Hermione was screaming; Ron was yelling; there was a blinding flash as the wands in Black’s hand sent a jet of sparks into the air that missed Harry’s face by inches;…