The clues for the 2012 Mystery CAL are still separate, so there are 8 PDFs required for the entire pattern.
You can see all the clues and yarn amounts for the CAL and KAL on this webpage: 2012 Mystery CAL and KAL
Here are the required amounts of yarn for the CAL:Waverly for Bernat
(100g/3.5 oz; 180 m/197 yds)
Main Color (MC): 5 balls
Contrast A: 2 balls
Contrast B: 2 balls
Contrast C: 2 balls
Contrast D: 2 balls
Size 5 mm (U.S. H or 8) crochet hook or size needed to obtain gauge
Gauge: 12 dc and 7 rows = 4" [10 cm]
By the way, here are recommended shade combinations for the suggested colorways in the CAL:SHADE COMBINATIONS
Good luck with your next blanket!