You could easily get 4 to 5 copies of this card in a draft. At first glance, it seems similar to Overload, but don't be fooled; Maximize is a powerful tool to thin out unwanted cards and get you closer to your bombs, as well as potentially having a huge impact on the game.
If you happen to have 5 Unexpected Blessings in your draft deck, you will almost always find one in your opening hand. Pulling 5 unwanted cards out of your library while gaining 15 life can be backbreaking. If you get more than 2 of these, you're looking at a pretty good bargain.
Don't expect the rest of the Maximize cards to be as dismissed offhandedly as this one. You'll be lucky to get two of a direct damage Maximizer (see tomorrow's card, Jagged Bolt.) After all, who's going to draft life gain?