The difference between a grade 9 and a grade 10 can be tens of thousands of dollars, so a beat-up Base Set card from your attic isn't likely to be a winning lottery ticket
Faerie Swarm could be a huge creature for only 4 mana if you can manage to get a lot of small blue faeries or other blue permanents onto the board
Spoilers Whenever an opponent scries, surveils, or searches their library, put a +1/+1 counter on River Song
Assuming you don't want more lands at the point you are actively wanting to turn your small dorks into more gas this thing is actually better than Clamp
If you can get to 6 mana reliably, the artifact takes your board presence to another level and helps to finish off games with plenty of card draw to boost this presence
To help celebrate that focus, Wizards has even put together a sweet new Commander preconstructed deck centered around them for the set