To what do you refer?   Perhaps Imbue Amalgam?   It's got a pretty hefty price to it in terms of resources.    I've taken it several times and not had the opportunity to use it once.    Quinn has the Short gestation merit.     Conception to birth in one to three months, divided by 10, which means she can drop a kid every 3 to 9 days without a resources 4 to 5 expenditure and/or a quest to find materials.