(this needs 4 fb accounts including the one you are using.)
1:go to the recruitment taveren and press recruit.select all your friends if you are lazy to find and select your extra accounts.
2:log on into your 3 other accounts and accept the request.
3:go back to your previous account which you used to send the request to collect your reward(note only collect medieval dragon).after you have accepted it,it will appear in your storage.
4:after you have collected it sell it to get 200000 gold.(do it as many times as you like the more you do the richer you get)