You get to play cards like The Deck of Many Things, Wand of Wonder, and Comet, Stellar Pup, which are all fun and powerful cards
Sure, it may only be half the card drawing of something like, say, Mulldrifter
Jace Reawakened sees the previously Phyrexianed hero becoming a two-mana blue planeswalker who cant be cast until turn four of the game
The deck has a much wider appeal, though, with a strategy that leverages powerful songs and flexible characters
But not being a counter makes it better against some decks and in some situations, like against a Cavern of Souls/Allosaurus Shepherd deck
Shabraz's lifegain also serves as a quick way to trigger Famished PaladinFamished Paladin, which can be equipped with Quicksilver DaggerQuicksilver Dagger for another infinite card draw combo