I'm assuming you would like an assortment of Merlin pretty?

http://merthur.tumblr.com/ -- What it says on the tin
http://brightporclain.tumblr.com/ -- Excellent Merlin gif's but she is an Arthur/Gwen shipper.
http://omgeoinmacken.tumblr.com/ -- Also what it says on the tin.
http://dailyherpderp.tumblr.com/ -- Bradley herp derp need I say more?
http://fuckyeahmerlin.tumblr.com/ -- pretty self explanatory
http://katiemcunf.tumblr.com/ -- Katie McGrath centric.
http://gwainesworld.tumblr.com/ -- Gwaine!
http://imgladyoureheremerlin.tumblr.com/-- Pretty much Arthur/Merlin centric.
http://fuckyeah-lancelot.tumblr.com/ -- Lancelot ♥

And little ol' me if you're so inclined. :) http://hardticket.tumblr.com/