Or it could just be a reference to FFXIII-2 there is an adorment which is legit a lucky clover

You find it in bresha ruins -005 AF

And you get a lucky clover adorment in Lightning returns which you get from doing the youth potion quest

And they both state this one the item

"A charm to make you feel your luck has gotten better... but it really hasn't."

Its just a ff13 reference