sing a song of flowers

Had Merlin been paying closer attention he probably would have cottoned on faster. But life goes on much as it always has within the castle walls, which means all sorts of madness, so there’s simply nothing for him to notice for days. It could have carried on infinitely like that and Merlin might have never noticed. After so many years on constant alert for malevolent sorcerers, malicious enchantresses, and ill-intended mages, protecting Arthur from beasts and curses and the odd bewitchment, anything not immediately life-threatening falls into the background of daily life fairly easily.

(Or: Yet another story where Merlin and Arthur need a little magical help figuring things out.)