Thread:BBB MJS/@comment-24276997-20131212222848/@comment-234729-20131215080155

Considering that Big Blue Bubble has never stated the chance for breeding Legendary & Ethereal monsters or the amount each lit torch increases the chance of rare breeding results, I'd wager that the chance is in the 1% to 3% range. If the increase of each torch is also a low number, lighting a full series of torches would take what is a 1% to 3% chance and make it into an 11% to 33% chance.

That IS a significant increase, but, as MJS states, not a guaranteed success rate.

However, take my post with a grain of salt as I'm not a BBB employee and my current data pool for theorycrafting is rather small.