The devil himself drops:
http://wlodb.com/monsters?search=abys
As for the prizes here is the official tw info from IGG;
http://wl.igg.com/guide/guide.php?acid=58&a...
Picklessssssssssssssssssssss!~
See more on Know Your Meme
[Guide] Level Planner for Player and Pet Training - http://wlodb.com/topics/13527
[Guide] Ultimate Pet Page - http://wlodb.com/topics/15272