I'm not going to sugarcoat it: Pyramid training on legs day is a brutal experience. High-rep squats are tough as hell. They tax your metabolism as much as your muscles, and then you drop reps and add weight for low-rep, heavy squats. These bad boys will leave your quads burning, but they're insanely effective for strength and size.
Even though today's workout only contains five total exercises, you've got two compound lifts and a huge pile of volume. It's more than enough to build some massive wheels, especially when you're working from 20 down to 8 reps, adding weight with each set, on your biggest exercises. The compound moves are followed by some pyramid isolation work, which will ensure no muscle fiber is left untapped.