Absolutes would make FG farming either impossible or too easy. Think to a mid game vs rainbow. With an absolute card you would be destroying 10-15 creatures, or 40 pillars, or 10 permanents at once. Isn't that OP?
that's right but in my opinion since they cost a lot of specific quantums (over 10 mostly) and they also often effect yourself these cards could if not be used at the right time harm yourself. here an example:
let's say you and another player play a round and you both have a lot of pillars around 10 let's say you bring out some creatures and then play epicenter, both of your pillars are gone but your creatures have only about 3 hp and your opponent plays next round (since he has some quantums on reserve) a rain of fire and all your creatures are dead and then he plays 1 or 2 dragons and then he is the one with the advantage.
(also these cards are not meant to be farming gods, i tought of cards like these to make elements a little bit more pvp oriented to think of a strategic deck by yourself and not one just to farm gods since at one time you will have enough money to upgrade all your cards^^)