Merlin and Arthur in “Valiant”

You talk to Gaius, you can see the puncture wounds in Ewan's neck where the snake bit him. Ewan was beating him. He had to cheat.

Valiant wouldn't dare use magic in Camelot.

Ewan was pinned under Valiant's shield. No one could see the snake bite him.

I don't like the guy but that doesn't mean he's cheating.

Gaius is preparing an antidote to the snake venom. When Ewan's conscious, he'll tell you what happened. If you fight Valiant in the final, he'll use the shield. It's the only way he can beat you. Look at it! Have you ever seen any snakes like this in Camelot? I know I'm just a servant and my word doesn't count for anything. I wouldn't lie to you.

I want you to swear to me what you're telling me is true.

I swear it's true.

Then I believe you.