In a format where board wipes can nullify your progress, and one where discarding cards either in search of more, or through wheels and other effects is commonplace, having ways to make use of your graveyard is key to having a flexible gameplan that can pivot as the game progresses
Clive, Ifrits Dominant(Front) andIfrit, Warden of Inferno(Back)by Kazuya Takahashi
Don't forget you can win the game as well - Craterhoof Behemoth (5), Pathbreaker Ibex (3), End-Raze Forerunners (7), Earthshaker Giant (6)
All those cards you lost end up turning into free creatures turn after turn after turn
The new Bucky, which will switch over with the release of Shimmering Skies , will have increased cost and weakened abilities
You likely aren't going to see more Towns in other sets