Talk:Game Updates/@comment-49.50.204.92-20120716041330/@comment-4775325-20120716042252

It's not even close to being efficient. The current best option is the Iron dragon which you can always breed from just Metal + Earth and only takes 4hrs (upgraded 3hrs 12mins) for 1,150,000. Even if you can only breed 3 in a day (1 in the morning before school/work, 1 in the evening when you return home and 1 at night before sleeping) that still gives you more than 3 times the dragoncash chain breeding Gold dragons would.