I am gonna go with Sylvan Library. It was the original deck stacking, and I've played it consistently for almost 20 years.
Plus it's a peaceful card. A library in the woods? I can almost hear the sparrows calling to each other as a deer walks up to eat some food out of a newborn lamb's hand. And then I shoot them all with a burn combo that I just paid 8 life for to activate in a turn. That I got from their precious library. My library now! Stupid cute wildlife.
Force
2 Sneak Attack
Natural Order
Vampiric Tutor
Dack Fayden
2 Baleful Strix (1 foil [$60...whaaaaa?])
Entomb
Vindicate
Top
Worldgorger
2 Enlightened Tutor
2 Mystic Tutor
2 Green sun's zenith (1 foil)
2 Silvos (1 foil)
Dualcaster foil
Hymn foil
Mongoose foil
A set of chain lightning
2 cabal therapy
Heritage druid
2 toxic deluge
Wrath
And then some other lesser stuff. I came out ahead. The force was in the very last pack I opened.
http://epicstream.com/news/Magic-The-Gathering--Eternal-Masters-Mythics-and-Rares-Leaked
I speak super highly of these guys.
The one I regret most? I traded a Snapcaster for a foil Havengul Lich. I'm such an idiot.