Talk:Fusions reported so far/@comment-1536121-20120704170442/@comment-5051663-20120705011234

75 Boost means you had either Lvl 4 + 6, or Lvl 6 + 4, or Lvl 5 + 5.

The probability formula didn't get put in:

Probability (in percent) = 110% - # of boost crystals required and not used.

So Toddler + Toddler = 33% to 37%, depending on exact level, and expect to average slightly less than 3 tries per successful fusion. So far I've had 3 successes out of 9 tries, mostly level 4 + 4, which comes out about right.