CCCWC March competition voters’ comments on Clue no. 26

A clue to EXCALIBUR.
5 comments refer to this clue (from 4 competitors, 1 other)

Here is the text

Comments on the clue

1.	Throwing 'an' into the middle of the anagram material spoils the clue
2.	Needs an anagram indicator, and the surface seems like gobbledegook.
3.	Surface not so great
4.	"an" messes up your anagram. And where's the anagram indicator?
5.	The "an" ruins it