Krovikan Horror

A card is "directly above" another card in your graveyard if it was put into that graveyard later and there are no cards in between the two.

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.

Players may not rearrange the cards in their graveyards.