YMMV / Merlin S 01 E 06 A Remedy To Cure All Ills

• Magnificent Bastard: Edwin Muirden is sorcerer posing as a physician, seeking revenge against Uther Pendragon for executing his parents. Using enchanted beetles that enter a person's ear, Edwin hides one in a bouquet of flowers for Lady Morgana, making her fall ill. With Gaius unable to cure the mysterious ailment, Edwin offers his services to the royal family and successfully 'cures' Morgana, impressing Uther. Discovering Merlin had magic, Edwin entices Merlin with an offer to mentor him. Edwin then discredits Gaius' competence as a physician, leading to Gaius being sacked and replaced by Edwin. Then prescribing a paralysis potion in place of Uther's medication, Edwin then reveals his identity and sends a beetle into Uther to eat through his brain.