Its a keyword ability representing how the other half of these split cards can be cast from the graveyard
With all its dimension-hopping and getting lost in time and space, creatures getting erased from the board ought to be an everyday occurrence when mana and sonic screwdrivers collide
You significantly improve the value of the Zenith if you can get a Dryad Arbor but most cubes won't run narrow support cards like that
Its dragon creature type is totally relevant for decks like The Ur Dragon, Scion of the Ur Dragon, and the recently released Tiamat
While this is an effect that can more reasonably be tracked with paper cards, it becomes substantially simpler in a digital space
They sit down to the Commander pod, and before you know it theyre in the triple digits for lift, the game is taking six hours, and the only way you can take them out is commander damage