I tweeted this link to the masses, half expecting someone else to jump on the deal
So as long as the card revealed isnt a land (with its subsequent 0-damage trigger), you are likely to draw cards from it, as long as its not too damaging
For example, if you cast a spell that deals 4 damage divided among any number of targets and you choose to have it deal 2 damage to a creature and 2 damage to that creature's controller, that spell will deal 4 damage to each of them instead
and the default setting is their running you over with Urabrask's Forge
the Blue Boon, Ancestral Recall, was considered the strongest, and was the only card in the cycle printed as a Rare
As long as you can afford a tapped land or two, Llanowar Reborn is an easy way to get a crucial counter on a card that needs it