A few things to note.
1.) Being 3 attack for 3 cost, flesh spider is not the most efficient card to fractal. As far as death cards, mummy may be a better fractal target although not a great one either.
2.) With only 3 aether pillars, you will have a slow time powering up fractal.
3.) A 'beginner' would likely not have arsenics.
4.) A rush deck by nature does not have shields, only attacking cards.