Huh? You can't separate out the die roll from everything else to claim there is no skill involved. You might as well then say everything you roll should benefit immensely from luck. For instance, when I roll a die to add to Stamina+Concentration there is no skill in the die roll.
There is a huge amount of skill level involved here: two Arts and Magic Theory. Generally speaking, that +die is going to be less than a quarter of the total when you include Intelligence, Aura, your lab, and any assistants on top of those three. That makes the random factor a small portion of the whole, meaning this is far more skill than luck.