Thread:PartyAtTheDukes/@comment-22439-20141116061312/@comment-7326455-20141118013800

The point is that breeding Riff and Pompom to get a Rare Pompom only does so because Riff+Pompom will always fail to produce an actual breeding result. If we started listing all the breeding combinations that yield a Pompom (and, by extension, a Rare Pompom) by failing, we'd be here all day.