If you attack with only Cloud, you get one card draw, but if you attack with 5 equipped creatures, for example, you draw five cards, which could help you obtain your win-cons or, perhaps, more lands in Magic: The Gathering
The combination of cards and life are usually enough to be able to turn around a game pretty effectively
After hitting the calculate probability button, the program will present the odds of drawing that many copies of X card after Y draws
While it saw some play in Standard for a few months in RUG Control and Valakut Ramp back in 2011, it hasnt ever really been much of a competitive card
Do as many drafts as you can afford first, pick all the rares and mythic rares you come across, and then open your packs