Any player with the title of Divinity has the complete set. But most of them have been playing since the game started - it would be almost impossible to get all the the collectors at this point.
I remember stumbling on this game a year, maybe two years ago...I was mildly interested, but I wasn't as comfortable with spending money on online games as I am know, so I forgot about it. I've finished kicking myself about it, but it's still a bit frustrating.
Like when its Summer of Clint City. every week or 2 weeks they give out 6 cards i think. i cant really remember.
OR, a new clan comes out...take jungo
and yes there are many people who has all the cards in the game, just look out for someone with the divinity rank and has currently 111% cards