way too OP, what if i had a single creature out, then brought out a spark, then fractaled the spark? then that creature will basically get all of the blessings?
No, since it's random, some of the sparks would probably get blessed before they die, resulting in a 6|3 spark alive and well.
And you're also talking about running a deck built around Fractals. In your example, you're paying 9
+ 6
to get X number of blessings, where X is the empty spaces in your hand. You can get the same number of blessings - or more - from actual Blessing cards in a mono deck, barring of course the 6-card rule. And you can do it without incorporating aether.
Compare this also to growth creatures, say you get 8 blessings (the maximum, +24|+24) for the 15 quanta... on a growth creature you can get +30|+30 for the same cost.
I don't think "way too OP" is shown by your argument.
then id probs make a deck with a lot of ROLs and a few creatures, fractal the ROLs, and if the opponent decides to kill of the ROLs with a rain of fire or thunder storm, the creature that survives gets a lot of blessings, my deck idea is shit but its just an example.
Or I could just play any damage reducing shield with momentum'd creatures (assuming you're using Hope), and not risk the Blessings. Tactics which count on your opponent to walk into a visible trap are unreliable at best...