We at Collider are happy to debut an exclusive clip from the home video release of M. Night Shymalan’s thriller Glass, which takes viewers behind-the-scenes to reveal the subtle (and less subtle) visual effects that were used to bring the film to life. While most probably figured some sort of digital enhancement was used to transform James McAvoy into the villainous The Beast, it’s surprising to see just how significant the digital transformation is in this clip. The veins on his chest, his eyes, and even his skin color were altered to make the monstrous baddie …