Scry is a useful ability that gives you control over your future draw steps. The "Fates Foreseen" deck is based around casting spells that give you additional benefits for scrying and setting up ways to scry repeatedly. Link together a chain of these spells and thwart your opponent's best laid plans.
Knowledge and Power is a key card in this deck. Combine this enchantment with cards like Stormcaller of Keranos, and you can take any opponent down from even a high life total. Scrying helps you dig for Knowledge and Power as well as other cards with scry, so it won't be too hard to find the enchantment and keep it firing.
Your ability to control which cards you draw means you're favored to win longer games, so you should be willing to trade your creatures for your opponent's in combat to preserve your life total. A key to winning with this deck, however, is knowing when to switch gears and go on the offensive. Cloaked Siren and Bladetusk Boar are 3-power creatures that are hard to block, and if you get either of them onto the battlefield, you can usually start trying to take your opponent down. Font of Ire, an enchantment that deals 5 damage to a player, lets you finish games suddenly against an unwitting foe.
If you want to experiment with other scry cards, one option is Thassa, God of the Sea from the Theros set. Thassa allows you to scry every turn for no mana, as well as making your creatures unblockable. If larger creatures are a problem, the Born of the Gods™ burn spell Fated Conflagration can be a great addition.
