Hmm, while all the rest of your recently posted cards a innovative and fairly balances, this one fail a bit on the latter. For 3 darkness, which can be played in the first or second round, this cards steals 1+1N quanta and hp/round? Talk about denial and vampirism in one shell. I suggest a cap on how much quanta (pair this with some pests and a eclipse to get a very powerful mono-denial deck) and hp this can drain. Getting a few of these out pretty much forces the enemy to have very good permanent control (like fire) or be rainbow (mono can't run away from that drain) or rush before they can "grow". Then again, that's quite a few counters... But still.
Max at 5 perhaps? (random number)