Monastery Siege, Frontier Siege, Yasova Dragonclaw, Return to the Earth, Atarka, World Render, Orc Sureshot, and Sage-Eye Avengers and were all in my Top 20, but they were pulled out for various reasons
Another card with both Standard and Modern impact
Serra Paragon recovers most of what you might care about ending up in your graveyard
If that's the case, it's unlikely I want to wait until turn five to get my Commander out, which means I need some ramp
While its generally better to find a card you can cast immediately after tutoring so your opponents have less time to plan around you, sometimes the threat of a board wipe like Damnation or a counterspell like Cryptic Command will convince opponents to play a little more cautiously, giving you more time to set up for an even bigger play down the road