What to nurture a praying mantis to produce it grow? I have a pet spider that absolutely loves to put away Praying...

I have a pet spider that absolutely loves to put away Praying Mantis. I haven't found him one in a while but today I found a baby one! How can I fatten him up so my spider can achieve a big meal? Thanks in credit.

PS I know there regular diet I need to know how to produce it grow! I can even buy drugs if I need to...please help!
Need to buy a riding grassland mower what...
Answers:    Put it on a diet of out-of-date 1950's sci fi black and white movies where the giant mantis devours a whole city. It should win an idea of what to eat. (Usually plenty of discouraging acting and evil scientists in lab coats!)
A big prehistoric wooden box floating surrounded by...
Keep the Praying Mantis alive! I do believe it is illegal to eradicate them. Praying Mantis's are beneficial to the outdoors. They eat insects that eat your plants.

Feed the spider crickets and grasshoppers or nurture it to the Mantis.