Gobby Guide
First off, Gobby is a very hard boss. He decide whats his weakness is and you can only hit him with that combat style, during the combat he usally change his weakness to range, melee or mage, so you will need to have the 3 combat style. I recommend end game armor and weapons to kill him.
Recommended setup :
Easy way to kill him is to protect melee and eat a lot of purple sweets.
Hard way to kill him is to switch between soulsplit and pray flicking with what ever attack he is using.
If you use wrong combat style he will do that
Rare drops
Kodai wand 1/600
Elder Maul 1/600
Pink, blue and normal santa Hat 1/400
Deathlotus armor pieces is 1/400
Your chance to get a rare drop can be really higher, depending on your drop bonus.