If blue decks are desperate for cheap ways to spend their mana, this could get edged out by Geistwave, but it looks like a contender
Assembly in three simple pieces is easy
The first is a triggered ability: "When this permanent enters the battlefield, target player may search their library for a card named [name], reveal it, put it into their hand, then shuffle their library." (6/8/2018) Note that the target player searches their library (which may be affected by effects such as that of Stranglehold) and that the card they find is revealed, even though these words aren't included in the ability's reminder text
If not, it's still a tutor for anything you need
There are useful roadblocks like Sea Gate Oracle that represent more of a two for one than card quality
Players draw a hand of seven cards at the beginning of the game