Hmmm my favorites are #2 Leaz and #4 Poringlys.
I really wanted to vote for #4 because I like the picture kind of pulls you in, but im going to be a stickler and keep to the theme, All of the other sigs excluding #5 and #3 don't keep in the theme of a Fantasy World. Fantasy worlds are supposed to be something out of the norm, like in #5s theres the floating island and the cat thingy, in mine theres the extra moons, and Leaz captures the theme of Fantasy letting your mind go and I like how she blended the stock into the earth, Only thing I don't like about it is border would of been a lot better having a transparent border.
Reasons voting for #2 Leaz is, keeps in theme, has a nice blend of stocks, the colors of the glow particles are nicely done.
on a side note
COOKIE MONSTER O.o