Well, i don't know what are the false gods yet, but today, the oracle gave me a pet emerald dragon... It was nice...
False gods are AI level 6 foes. To challenge them is to challange fate.... or something like that.
Anyways after you get past all the quest you will find yourself getting a rare card, and you will be able to upgrade cards, and challenge false gods. I think there is 24 or 23 of them. They are the second hardest foe you will face in Elements, the first hardest being anyone playing "rage quit" decks. lol