There is a lot of 5 Card Draw played at Costa Del Poker (although I don`t think they have a regular freeroll, as far as I recall).
Worth a look, though, because they also have the Cardschat League (if you can stand to play some Holdem once in a while). Also, the site`s owner, Martin, is a member here at CC and well known to many of us, quite handy if you ever have any complaints or queries you need attending to.
There is a sign-up link here:
https://www.cardschat.com/announcement.php?f=13