I had three, two grown ones which were plenty, and a baby that I kept in my baby animal pen. One was the one I got from the quest, I don't remember which one it was, and two were in prize boxes from Adventures.
Then last week, I had a pretty Manti Egg drop from my Roost! As soon as it hatched, another dropped from my Roost! Two in a week! Just this morning yet another Egg dropped! My Forge is working nearly nonstop hatching Manticores! I love them! Has anyone else had their roost drop Manticore Eggs like this?
I must be very lucky! The Manticore Eggs are the best because unlike Dragon Eggs they need no Burning Embers, just two days cooking in the forge. And they are so pretty! Three so close together? Unexpected but Awesome!
So when today's egg hatches in two days, I will have six Manticores!
I can't imagine this happens very often! Except to as I just read up a bit, to Chaotarch! Congratulations Chaotarch that you got the three egg drop as well!
Still doubt it happens often, and don't think the drop rates have changed.
But yes, 6 total Manticores.