Itll help you rebuild when someone uses a sweeper or you want to do some of your own work in getting them into the graveyard, back into your hand, into your library, or into exile
Basically you load up on your favorite High CMC spells - Eldrazi Titans (Ulamog, the Infinite Gyre), extravagant board wipes (Decree of Annihilation), whatever you find interesting (Myojin of Night's Reach) and just go to town
As fun as this combo is, it isnt cEDH viable, and its part of a rather niche strategy
And aside from a few spells like Eternal Witness, Noxious Revival, or Bela Ged Recovery, you'll pretty much be cut off from anything that hits the graveyard and anything that does make it to hand
In grind-heavy Commander games, each death shifts life totals in your favor, and over multiple turns, that pressure becomes impossible to ignore