What do you have to do in order to get a blessing available? Are those Coda Caves crystals involved in getting a blessing? If so, how and what colors/how many do you need?

Essentially, you go here http://subeta.net/explore/caves_quest.php

And you click on which pet to bless, which will turn it into a galactic pet. Based on my experience, my two quests yesterday, you just need one of each crystal. Regardless, he will let you know what you need. You can also buy the crystals from user shops, which is relatively cheap, especially when comparing to other potions.

Thank you! This perfectly answers me questions. :3