Concerning mechanic balance...This idea of yours makes me think first of a sort of mass version of mutation, like the way pandemonium is sort of a mass version of chaos seed. Now, this doesn't affect stats of the creature, but it does affect skills...Depending on the creature, it could make it more or less powerful, since not all abilities require quanta.
Momentum, Venom, Gravity Pull, Immaterial, are some if not all of the abilities that don't require quanta.
Mitosis would count, as the cost of mitosis is always the cost of the creature's casting cost, which would not have changed.
Entropy is the only thing that really fits for this idea, so it'd have to go here...The REAL question, if you ask me, is will this card be useful enough to be worth using despite it's natural randomness?