Lessons from the Crystal Cave (смешанная)

5X13 Alternate Ending. In which Merlin is a BAMF and Arthur doesn't die.
o-o-o
“No,” Merlin said, resolve coloring his voice and face as he slid his body out from under Arthur’s and laid his beloved king gently against the dew filled grass. “I’m not going to lose you: not here, not now, not like this.”