Talk:Crystal Dragon/@comment-172.219.38.126-20120704175741/@comment-5991203-20120705162217

They are not very useful for rare dragons. Although pairing it with Blue Fire gives you a chance at all three rares, the 24 hour timer on the crystal wastes a lot of time in your breeding cave and nursery. There are other combos, such as Poison and Storm, that also gives a chance at all three rares with much faster times.