This is overpowered... simply put it in a deck which only uses creatures with more than 2 attack, this would then provide you with a mass buff to all your creatures for an extremely low cost.... 2/3 of a blessing for all your creatures for only 2 random quanta? Together with this it would kill any creature with less than 3 attack, simply rendering any deck with devourers, butterfly effect, otyughs, scarabs, vultures, armaggios, even forest spirits and some nymphs completely useless.
I think alone for the +2/+2 to all your creatures the cost should be increased to something like 7 quanta considering they are random