Arthur reincarnates fairly quickly but seems doomed to due gruesome deaths at young ages.
At first, Merlin goes, "NOOOooo!" every time it happens, but he eventually gets used to it.
Once, Arthur accidentally steps out in front of a car while trying to cross the road, and Merlin's just like...
"Twenty-four perfectly good years wasted, you dollophead. Do you know how much work you create for me? Now I've got to go start harassing pregnant ladies, asking if they're thinking of naming their son Arthur, cash your life insurance policy, put your junk in storage again, sell your house for profits, pay off your bar tab, come up with another funeral program-"
Mid-rant, he realizes that the other people at the crosswalk are staring at him, horrified.