Thread:Sylvandyr/@comment-5619126-20121014124324/@comment-4830404-20130102175447

For example, back when I bred Crusader + Fruitful to get my three Diamonds back then, these were the non-Diamond outcomes possible:


 * Life (3 hrs)


 * Wild (6 hrs)


 * Forestfire (7 hrs)


 * Fruitful (10 hrs)


 * Fairy (8 hrs)

So taking those percentages above and removing the Ultra Rare from the equation (since that will be success), you re-weight the percentages to fit into 100%. I am super lazy so I am gonna skip that part and just use the percentages straight in the example but dumping the extra Ultra Rare % into the Common % to make 100%... Assume Common = 69%, Rare = 21%, Super Rare = 10%.

So to get avg fail time of this set you would have done (.69 * ((3 + 10) / 2)) + (.21 * ((6 + 8)/2)) + (.1 * 7). Doing this you get an avg fail time of 7.285 hrs, which is really low. However if you were to try for Diamond using Green + Purple + Blue + Red, that would introduce really long avg. fail times due to the possibility of Poison, Familiar, Magic, Island, Serpent, Atlantis, Charm, Titan, Planet, etc...

Higher avg fail time = less time spent trying for Diamond, which means less overall chance of getting it (due to not putting in enough attempts).