Tozette — fandom journal

The day Arthur finds out about the magic is the day Merlin is banished.

A lot of stuff actually happens between those two events, but it's less significant to Merlin. Arthur gets saved from the glare of a gorgon and they cleverly turn her to stone, for one. There's also a lot of yelling—a lot of yelling—about the floating mirror that Merlin employs to help with this.

Probably the worst thing Arthur says is, "I thought, if you were a rubbish servant, at least you were loyal!"