Quote Originally Posted by shinta
@Ryll - Like I said, preparation is important too. Illya had tons of command spells to control Hercules due to her family's preparation, and that made the team monstrous. I agree with you, but that does not make Shirou's war less difficult to win.
Illya had:

-A monstrous magic circuit
-A monstrous command spell that covered her whole body

I'm sure everybody only has 3 command spells, regardless of size. Berserker class drains your magic in order to sustain them, and that's the reason for her success - not because of additional command spell.