Zombie Scavengers

If an effect or rule puts two or more cards into the same graveyard at the same time, the owner of those cards may arrange them in any order.

The “top” card of your graveyard is the card that was put there most recently.

The last thing that happens to a resolving instant or sorcery spell is that it’s put into its owner’s graveyard. —Example: You cast Wrath of God. All creatures on the battlefield are destroyed. You arrange all the cards put into your graveyard this way in any order you want. The other players in the game do the same to the cards that are put into their graveyards. Then you put Wrath of God into your graveyard, on top of the other cards.