Talk:Silver Olympus Dragon/@comment-114.30.121.219-20120801040826/@comment-203.6.176.104-20120801122030

Butterfly Tree is best for this. My understanding is that your chance of getting Olympus is not affected by the possibilities among the common results. So by including Fire and Plant in the element mix you bring the average common breeding time down to 7.5h from 12h (for only Earth, Air, Lightning). But there is a tiny chance you'll get a rainbow... It still works out much better  on average though.