At first glance UW Skies looks a lot like The Deck but there is one big difference and that is that UW Skies usually plays up to four Serra Angel and four Serendib Efreet. What to cut for those eight cards is of course the hard part and the easiest solution is to skip splashing for all the restricted cards. It's also not unusual to cut a couple of books and other slower control cards.
Apart from that change UW Skies plays the same control package as The Deck, which means playsets of Counterspell, Swords to Plowshares and Disenchant. Because of that, UW Skies is quite the formidable control deck but as it also plays a bunch of big monsters it can quickly change pace and go on the offensive quite well.