Board Thread:General Discussion/@comment-25157402-20140709090537/@comment-24145588-20140709141108

I don't have an actual number, but empirically, I can say that the chances are "pretty darn high." I've bred the Yool, Schmoochle, and Blabbit, and each of them took no more than five tries. No torches necessary.

Or, I might've just been lucky, and the odds are a lower than they seemed to me.

But without a doubt, Seasonals have a much higher chance than Ethereals.