Alternately titled: Merlin is a BAMF.
Mainly Merlin speaking in the dragon tongue, but I also included a clip from "Aithusa" (4x4) just because I love his intensity. I am missing one dragonsummoning scene for sure (from season 4 I think?), but I caught most of them: 2x13, 3x1, 3x11, 4x2, 4x4, 4x13, 4x13, 5x1, 5x2, 5x5, 5x9, 5x10, 5x13, 5x13