Imaginary Fiends

Wyatt's new imaginary friend is actually a demon named Vicus, who is attempting to gain the child's trust and turn him evil. Meanwhile, Piper tries to cast a spell to make her understand baby Wyatt, but it accidentally conjures up an adult Wyatt from the future. After Vicus curses Wyatt to become evil, the now-malevolent adult version kidnaps his child self to prevent the Charmed Ones from reversing the process.