Check out the video I posted below which walks through buying a few cards followed by a reveal a few weeks later.
$0.99 Seam Rip Edge of Eternities $4.49 Haliya, Guided by Light Edge of Eternities $0.59 Enter the Avatar State Avatar: The Last Airbender $0.39 Momo, Playful Pet Avatar: The Last Airbender $0.49 Sage of the Skies Tarkir: Dragonstorm $0.79 Aang, at the Crossroads Avatar: The Last Airbender $0.59 Starfield Shepherd Edge of Eternities $0.39 Nurturing Pixie Outlaws of Thunder Junction $0.59 Katara, the Fearless Avatar: The Last Airbender $9.99 Abandoned Air Temple Avatar: The Last Airbender $0.49 Hakoda, Selfless Commander Avatar: The Last Airbender $0.49 South Pole Voyager Avatar: The Last Airbender 0 results found
Stocking the graveyard could be mere fuel for Varina, or it could provide an avenue for fueling powerful zombies and zombie-typal cards like Hashaton, Scarab's Fist, The Scarab God, and Gisa and Geralf
You know you'll get it out on turn 3-4 and you just need to hit a way to mill or search for something to put in your yard early, and then you can move into midgame with a big threat on the table, and the ability to get it back without jacking up your commander tax repeatedly
Cards like [c]Stifle[/c] and [c]Ground Seal[/c] are examples of this archetype