While I have no problem with anybody snapping up Gravecrawlers if theyre building Vengevine or they think that the card is underpriced for some other reason, people tend to underestimate the difficulty of actually getting those last few cards in a new Modern deck when more than half the value of most of these decks is tied up in just two or three crucial bottlenecks
Sheoldred, the Apocalypse The queen of incidental lifegain was in Phyrexia all along
However, since Liliana can be exiled and returned to the battlefield only once, only the first ability to resolve will create a Zombie token
The Great Aurora The Great Aurora is such a bizarre Magic card
Honorable Mention: Surgeon General Commander Surgeon General Commander is an expensive, but fun card draw engine
For this list, Im stretching the definition a little to include cards that let you draw and discard one or more cards, like Rain of Revelation and Thirst for Knowledge